feat(yamllint): add .git/ to ignores

https://gitlab.com/myii/openvpn-formula/-/jobs/1076814969#L135

```
Check YAML syntax with yamllint..........................................Failed
- hook id: yamllint
- duration: 1.17s
- exit code: 1
./.git/refs/remotes/origin/ci/move-to-kitchen.windows.yml
  1:1       warning  missing document start "---"  (document-start)
./.git/logs/refs/remotes/origin/ci/move-to-kitchen.windows.yml
  1:89      error    line too long (378 > 88 characters)  (line-length)
  1:164     error    syntax error: found character '\t' that cannot start any token (syntax)
```

Happened when the branch name ended in `.yml`; shouldn't be checking
under `.git/` anyway.

.yamllint

@@ -5,13 +5,16 @@
 extends: 'default'
 
 # Files to ignore completely
-# 1. All YAML files under directory `node_modules/`, introduced during the Travis run
-# 2. Any SLS files under directory `test/`, which are actually state files
-# 3. Any YAML files under directory `.kitchen/`, introduced during local testing
-# 4. All Jinja templates under `ssf/files/` (result in `yamllint` syntax errors)
+# 1. All YAML files under directory `.cache/`, introduced during the GitLab CI run
+# 2. All YAML files under directory `.git/`
+# 3. All YAML files under directory `node_modules/`, introduced during the Travis run
+# 4. Any SLS files under directory `test/`, which are actually state files
+# 5. Any YAML files under directory `.kitchen/`, introduced during local testing
+# 6. All Jinja templates under `ssf/files/` (result in `yamllint` syntax errors)
 #    Not disabling via. `*.yml` since we may end up with non-Jinja YAML files here
 ignore: |
   .cache/
+  .git/
   node_modules/
   test/**/states/**/*.sls
   .kitchen/

ssf/defaults.yaml

@@ -62,8 +62,8 @@ ssf_node_anchors:
             #       An alternative method could be to use:
             #       `git describe --abbrev=0 --tags`
             # yamllint disable rule:line-length rule:quoted-strings
-            title: "chore(rubocop): allow use of '`'YAML.load'`' for '`'_mapdata.rb'`' [skip ci]"
-            body: '* Automated using https://github.com/myii/ssf-formula/pull/296'
+            title: "chore(yamllint): add '`'.git/'`' to ignores [skip ci]"
+            body: '* Automated using https://github.com/myii/ssf-formula/pull/297'
             # yamllint enable rule:line-length rule:quoted-strings
           github:
             owner: 'saltstack-formulas'
@@ -237,6 +237,7 @@ ssf_node_anchors:
           ignore:
             default:
               - '.cache/'
+              - '.git/'
               - 'node_modules/'
             additional_ssf:
               - 'test/**/states/**/*.sls'

ssf/files/default/.yamllint

@@ -12,19 +12,21 @@ ignore: |
 {%-   endfilter %}
 {%- endmacro %}
 # Extend the `{{ yamllint.extends }}` configuration provided by `yamllint`
-extends: {{ yamllint.extends }}
+extends: '{{ yamllint.extends }}'
 
 # Files to ignore completely
-# 1. All YAML files under directory `node_modules/`, introduced during the Travis run
-# 2. Any SLS files under directory `test/`, which are actually state files
-# 3. Any YAML files under directory `.kitchen/`, introduced during local testing
+# 1. All YAML files under directory `.cache/`, introduced during the GitLab CI run
+# 2. All YAML files under directory `.git/`
+# 3. All YAML files under directory `node_modules/`, introduced during the Travis run
+# 4. Any SLS files under directory `test/`, which are actually state files
+# 5. Any YAML files under directory `.kitchen/`, introduced during local testing
 {%- if semrel_formula == 'ssf' %}
-# 4. All Jinja templates under `ssf/files/` (result in `yamllint` syntax errors)
+# 6. All Jinja templates under `ssf/files/` (result in `yamllint` syntax errors)
 #    Not disabling via. `*.yml` since we may end up with non-Jinja YAML files here
 {%- elif semrel_formula == 'mysql' %}
-# 4. Any YAML files using Jinja (result in `yamllint` syntax errors)
+# 6. Any YAML files using Jinja (result in `yamllint` syntax errors)
 {%- elif semrel_formula in ['postgres', 'salt'] %}
-# 4. All YAML files heavily reliant on Jinja; these can be tackled in a subsequent PR
+# 6. All YAML files heavily reliant on Jinja; these can be tackled in a subsequent PR
 {%- endif %}
 {%- set yl_ignores = {'ignore':
   yamllint.ignore.default +
@@ -91,3 +93,13 @@ rules:
     {{- format_ignore(yl_ov) }}
     forbid-implicit-octal: {{ yl_ov.get('forbid-implicit-octal') }}
     forbid-explicit-octal: {{ yl_ov.get('forbid-explicit-octal') }}
+  {%- if semrel_formula == 'ssf' %}
+  {#- TODO: Arrange this section as all of the others above #}
+  # yamllint disable rule:comments-indentation
+  # Disable this rule for the time being due to numerous violations detected after
+  # update to `1.22.0` (Fix quoted-strings rule not working on sequences items), see:
+  # https://github.com/adrienverge/yamllint/blob/master/CHANGELOG.rst#1220-2020-04-13
+  # quoted-strings:
+  #   quote-type: 'single'
+  # yamllint enable rule:comments-indentation
+  {%- endif %}