Implement init container for PSQL to avoid permission error on specific implementation of PVs

[kurokobo]

Context:

• Add logic for upgrading from Postgres 13 to 15 #122 (comment)
• Add postgres init container to resolve permissions for some k3s deployments awx-operator#1805

@rooftopcellist

[rooftopcellist]

Agreed, we should implement this in this operator as well. That way users won't need to chown the hostPath directory being mounted to PID 26.

[jamesregis]

I have made a pull request to fix this issue based on awx-operator : #193

[dsavineau]

Thanks James ! I'll close this issue then