fixes #4958 - changed organization extensions has_many environments to kt_environments to not conflict with Foreman's has_many environments
fixes #4958 - additional changes to support org kt_environments relationship

This commit contains a few more changes need to support the renaming
of environments to kt_environments in the organization_extensions.
Merge pull request #3923 from bbuckingham/joseph-4958

fixes #4958 - changed organization extensions has_many environments to kt_environments to not conflict with Foreman's has_many environments