Helm template fails on special chars in gitlab database password

Helm template can fail if "invalid" characters are included in the addons.gitlab.database.password field. This could be resolved by updating chart/tempaltes/gitlab/secret-database.yaml to apply quotes to the field.

Steps to reproduce:

• Create tmp_values.yaml:

addons:
  gitlab:
    enabled: true
    database:
      host: something
      password: 'working'
      # password: '}broken'

• From the bigbang repo directory, run helm template .chart -f <path to tmp_values.yaml>
• Add a closing brace (}) to the password (there are likely other chars that exhibit this behavior, but this is enough for an example)
• Rerun the template command and observe the template error:

Error: YAML parse error on bigbang/templates/gitlab/secret-database.yaml: error converting YAML to JSON: yaml: line 7: did not find expected node content

Suggested solution: Update the secret-database secret template in the gitlab templates with a quote function:

stringData:
    PGPASSWORD: {{ .Values.addons.gitlab.database.password | quote }}