Description of problem:

Cannot disable metrics, False value is overridden by the default value (True)

 Version-Release number of selected component (if applicable):

mta-operator-bundle-container-6.2.0-16

How reproducible:

100%

Steps to Reproduce:

1. On OpenShift, go to mta-hub deployment -> Environment tab
2. Set METRICS_ENABLED=False

Actual results:

After few seconds the METRICS_ENABLED value resets to True