Added pattern and max-length to secret names

[imedaouidene]

SUMMARY

Added RFC1123 validation on the secrets definied in these following properties:

• admin_password_secret
• old_postgres_configuration_secret
• secret_key_secret
• broadcast_websocket_secret

REASEON: cleanup tasks will try to create the secrets if they doesn't already exist, making the AWX instance in failing condition.
Problem obeserved when admin_password_secret was defined with the password itself not the secret's name, making the AWX instance failing.

ISSUE TYPE

• New or Enhanced Feature

ADDITIONAL INFORMATION

[TheRealHaoLiu]

Thank you for you contribution @imedaouidene this is a good contribution and we want to merge it.

Can you take a look at the CI failures?

[rooftopcellist]

Thank you for this.

Just an FYI for anyone stumbling across this in the future, these parameters are for specifying the name of the k8s secret. The k8s secrets themselves contain the sensitive values.