Description of problem:
Installer fails to configure satellite with external database PostgreSQL when no psql utility installed

Version-Release number of selected component (if applicable):
Satellite 6.10.1.1 

How reproducible:
Always

Steps to Reproduce:
1. Configure repos for satellite, and install satellite package.
2. Install and configure postgres on rhel7 box as per documentation[1]
3. Run installer to configure satellite with external db
# satellite-installer --scenario satellite \
--foreman-initial-admin-password <admin-passwd> \
--foreman-db-manage false \
--foreman-db-host $DATABASE \
--foreman-db-database foreman1db \
--foreman-db-username foreman1! \
--foreman-db-password <db-passwd> \
--foreman-db-port 5432 \
--katello-candlepin-manage-db false \
--katello-candlepin-db-host $DATABASE \
--katello-candlepin-db-name candlepin1db \
--katello-candlepin-db-user candlepin1! \
--katello-candlepin-db-password <db-passwd> \
--katello-candlepin-db-port 5432 \
--foreman-proxy-content-pulpcore-manage-postgresql false \
--foreman-proxy-content-pulpcore-postgresql-host $DATABASE \
--foreman-proxy-content-pulpcore-postgresql-db-name pulpcore1db \
--foreman-proxy-content-pulpcore-postgresql-user pulpcore1! \
--foreman-proxy-content-pulpcore-postgresql-password <db-passwd> \
--foreman-proxy-content-pulpcore-postgresql-port 5432


Actual results:
Installer fails in step 3, for missing psql utility

Expected results:
The installer should pass, and should install dependency for psql utility


Additional info:
1. WORKAROUND:
Install package "rh-postgresql12-postgresql-syspaths" on satellite before running the installer and installer pass in step 3.

2. Also tested the same scenario on 6.9.7, it just worked fine, after completion I check `rh-postgresql12-postgresql-syspaths` package was installed after the installer, so looks like a regression to me in 6.10

3. This BZ[2] just provided a fail-safe option for backup/restore for a similar issue.


[1] https://access.redhat.com/documentation/en-us/red_hat_satellite/6.10/html/installing_satellite_server_from_a_connected_network/performing-additional-configuration#using-external-databases_satellite
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1921295