feat(semantic-release): implement for this formula

* Close #165
* Move existing `.kitchen.yml` => `kitchen.vagrant.yml`
* Semi-automated using https://github.com/myii/ssf-formula/pull/30
* Fix errors shown below:

```bash
openssh-formula$ yamllint -s .
./pillar.example
  49:3      error    duplication of key "AllowUsers" in mapping  (key-duplicates)
  57:3      error    duplication of key "DenyUsers" in mapping  (key-duplicates)
  63:3      error    duplication of key "AllowGroups" in mapping  (key-duplicates)
  70:3      error    duplication of key "DenyGroups" in mapping  (key-duplicates)
  79:24     warning  truthy value should be one of [false, true]  (truthy)
  80:29     warning  truthy value should be one of [false, true]  (truthy)
  118:4     warning  missing starting space in comment  (comments)
  119:4     warning  missing starting space in comment  (comments)
  119:89    error    line too long (122 > 88 characters)  (line-length)
  120:4     warning  missing starting space in comment  (comments)
  120:89    error    line too long (144 > 88 characters)  (line-length)
  147:30    warning  truthy value should be one of [false, true]  (truthy)
  148:21    warning  truthy value should be one of [false, true]  (truthy)
  149:19    warning  truthy value should be one of [false, true]  (truthy)
  150:32    warning  truthy value should be one of [false, true]  (truthy)
  151:26    warning  truthy value should be one of [false, true]  (truthy)
  152:31    warning  truthy value should be one of [false, true]  (truthy)
  153:32    warning  truthy value should be one of [false, true]  (truthy)
  154:29    warning  truthy value should be one of [false, true]  (truthy)
  155:34    warning  truthy value should be one of [false, true]  (truthy)
  175:8     warning  missing starting space in comment  (comments)
  175:89    error    line too long (152 > 88 characters)  (line-length)
  176:8     warning  missing starting space in comment  (comments)
  176:89    error    line too long (126 > 88 characters)  (line-length)
  177:8     warning  missing starting space in comment  (comments)
  177:89    error    line too long (148 > 88 characters)  (line-length)
  213:18    warning  truthy value should be one of [false, true]  (truthy)
  219:18    warning  truthy value should be one of [false, true]  (truthy)
  225:18    warning  truthy value should be one of [false, true]  (truthy)
  241:22    warning  truthy value should be one of [false, true]  (truthy)
  243:22    warning  truthy value should be one of [false, true]  (truthy)
  244:20    warning  truthy value should be one of [false, true]  (truthy)
  245:21    warning  truthy value should be one of [false, true]  (truthy)
  254:24    warning  truthy value should be one of [false, true]  (truthy)
  255:22    warning  truthy value should be one of [false, true]  (truthy)
  256:23    warning  truthy value should be one of [false, true]  (truthy)
  265:22    warning  truthy value should be one of [false, true]  (truthy)
  268:21    warning  truthy value should be one of [false, true]  (truthy)
  269:20    warning  truthy value should be one of [false, true]  (truthy)
  270:21    warning  truthy value should be one of [false, true]  (truthy)
  279:26    warning  truthy value should be one of [false, true]  (truthy)
  280:24    warning  truthy value should be one of [false, true]  (truthy)
  281:25    warning  truthy value should be one of [false, true]  (truthy)
  307:16    warning  truthy value should be one of [false, true]  (truthy)
  308:6     warning  missing starting space in comment  (comments)
  314:6     warning  missing starting space in comment  (comments)
  316:24    warning  truthy value should be one of [false, true]  (truthy)
  339:89    error    line too long (546 > 88 characters)  (line-length)
  340:89    error    line too long (546 > 88 characters)  (line-length)
  341:89    error    line too long (546 > 88 characters)  (line-length)
  342:89    error    line too long (546 > 88 characters)  (line-length)
  344:4     warning  missing starting space in comment  (comments)
  345:4     warning  missing starting space in comment  (comments)
  357:19    warning  truthy value should be one of [false, true]  (truthy)

./openssh/osfamilymap.yaml
  1:1       warning  missing document start "---"  (document-start)

./openssh/osfingermap.yaml
  1:1       warning  missing document start "---"  (document-start)

./openssh/osmap.yaml
  1:1       warning  missing document start "---"  (document-start)

./openssh/defaults.yaml
  1:1       warning  missing document start "---"  (document-start)
  3:18      warning  truthy value should be one of [false, true]  (truthy)
  6:34      warning  too few spaces before comment  (comments)
  10:25     warning  truthy value should be one of [false, true]  (truthy)
  12:32     warning  too few spaces before comment  (comments)
  16:24     warning  truthy value should be one of [false, true]  (truthy)
  18:24     warning  too few spaces before comment  (comments)
  20:42     warning  too few spaces before comment  (comments)
  27:6      warning  missing starting space in comment  (comments)
```

.gitignore

@@ -1,3 +1,122 @@
-*.swp
-.kitchen/
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a packager
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.kitchen
 .kitchen.local.yml
+kitchen.local.yml
+junit-*.xml
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# dotenv
+.env
+
+# virtualenv
+.venv
+venv/
+ENV/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+
+# Bundler
+Gemfile.lock
+
+# copied `.md` files used for conversion to `.rst` using `m2r`
+docs/*.md
+
+# Vim
+*.sw?
+
+## Collected when centralising formulas (check and sort)
+# `collectd-formula`
+.pytest_cache/
+/.idea/
+Dockerfile.*_*
+ignore/
+tmp/