[LDAP] - Multiple group support

[a-chartier]

I very well may be missing something so please tell me if that's the case.

Currently the following value keys

remoteAuth.ldap.requireGroupDn
remoteAuth.ldap.isAdminDn
remoteAuth.ldap.isSuperUserDn

Only support a single string entry, Ideally they could be changed to support multiple inputs

remoteAuth:
  ldap:
    requireGroupDn:
      -  CN=<sample>,OU=<sample>,OU=<sample>,OU=<sample>,DC=example,DC=com
      -  CN=<super sample>,OU=<sample>,OU=<sample>,OU=<sample>,DC=example,DC=com

This would mean changing the Helm template relevant sections to support the following setup

AUTH_LDAP_REQUIRE_GROUP = (
    (
        LDAPGroupQuery("CN=<sample>,OU=<sample>,OU=<sample>,OU=<sample>,DC=example,DC=com") |
        LDAPGroupQuery("CN=<super sample>,OU=<sample>,OU=<sample>,OU=<sample>,DC=example,DC=com") 
    )
)

I would be willing to make a PR on this if it's something that would be entertained. The relevant django section is here

This would allow LDAP integration to allow for much more granular access control within the Helm deployment.

Thanks