Handle docker env config changes in the oadp-operator

This issue clones OADP-1150 for 1.2

Description of problem:

In this case: TimeZone

https://github.com/vmware-tanzu/velero/pull/2944

We could ensure the oadp-controller also has the TZ config or we could better handle any env config available to velero container running in docker.

Notes from Emily:
Emily  12:34 PM

I wonder if we could append it to the velero container here: https://github.com/openshift/oadp-operator/blob/master/controllers/velero.go#L486 (edited) 
 

maybe could do something like add the value to the OADP api in the velero config (what Dylan pointed out). Write a func to check whether or not that value is set. If so, append that env var with the value in DPA to the velero container
 
Notes from Dylan:
https://github.com/openshift/oadp-operator/blob/master/api/v1alpha1/oadp_types.go#L66
 
 
basically just add it here
 

Which version we'll fix this in is TBD.