Description of problem:

Upgrading to Satellite version 6.16 fails with below error:

       nothing provides module(postgresql:13) needed by module satellite:el8:61620240906175455:25814d71.x86_64

How reproducible: Always{}

Steps to Reproduce:

1. Deploy a FIPS enabled Satellite 6.15 server

2. Run below commands to perform the 6.16 upgrade:

1. curl -o /etc/pki/ca-trust/source/anchors/satellite-sat-engineering-ca.crt http://satellite.sat.engineering.redhat.com/pub/katello-server-ca.crt; update-ca-trust

1. curl -o /etc/yum.repos.d/satellite.repo http://ohsnap.sat.engineering.redhat.com/api/releases/6.16.0/snaps/3.0/el8/satellite/repo_file

1. satellite-maintain self-upgrade --maintenance-repo-label=Satellite_Engineering_Satellite_6_16_Composes_Satellite_Maintenance_6_16_RHEL8

1. satellite-maintain upgrade check -y --whitelist=repositories-validate,repositories-setup,non-rh-packages

1. satellite-maintain upgrade run -y --whitelist=repositories-validate,repositories-setup,non-rh-packages

Actual behavior:
The upgrade fails with below error:

Switch the given stream modules:                                      [FAIL]
Failed executing dnf -y --disableplugin=foreman-protector module switch-to postgresql:13, exit status 1:
 Updating Subscription Management repositories.
Satellite 6.16 RHEL8                            5.8 kB/s | 2.6 kB     00:00    
Satellite Maintenance 6.16 RHEL8                4.8 kB/s | 2.1 kB     00:00    
Modular dependency problem:

 Problem: conflicting requests
  - nothing provides module(postgresql:13) needed by module satellite:el8:61620240906175455:25814d71.x86_64 from Satellite_Engineering_Satellite_6_16_Composes_Satellite_6_16_RHEL8
Error: Problems in request:
missing groups or modules: postgresql:13
Modular dependency problems:

 Problem: conflicting requests
  - nothing provides module(postgresql:13) needed by module satellite:el8:61620240906175455:25814d71.x86_64 from Satellite_Engineering_Satellite_6_16_Composes_Satellite_6_16_RHEL8
--------------------------------------------------------------------------------
Scenario [Migration scripts] failed.

The following steps ended up in failing state:

  [packages-switch-modules]

Expected behavior:

The upgrade should be successful{}

Additional Info:

Upgrading Capsule server is also not successful

Switch the given stream modules:                                      [FAIL]
Failed executing dnf -y --disableplugin=foreman-protector module switch-to postgresql:13, exit status 1:
 Updating Subscription Management repositories.
Satellite Capsule 6.16 RHEL8                    5.8 kB/s | 2.6 kB     00:00    
Satellite Maintenance 6.16 RHEL8                4.7 kB/s | 2.1 kB     00:00    
Installing module 'postgresql:13' from Fail-Safe repository @modulefailsafe is not allowed
Error: Installing module from Fail-Safe repository is not allowed
--------------------------------------------------------------------------------
Scenario [Migration scripts] failed.

The following steps ended up in failing state:

  [packages-switch-modules]
  [packages-enable-modules]

Resolve the failed steps and rerun the command.