#5 Allow tags to be passed as array in values.yaml

Pass tag as array in values.yaml and join them into a comma-separated string before passing it to env

The following yaml

    targetTags:
      - targetFoo
    excludeTags:
      - excludeFoo
      - excludeBar
    builtinTags:
      - builtin

will be passed to the environment as

APPGATE_OPERATOR_BUILTIN_TAGS=builtin
APPGATE_OPERATOR_TARGET_TAGS=targetFoo
APPGATE_OPERATOR_EXCLUDE_TAGS=excludeFoo,excludeBar