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Description of problem:
need to restart services after enabling leapp plugin

Version-Release number of selected component (if applicable):
satellite-installer-6.8.0.5-1.el7sat.noarch

How reproducible:
always

Steps to Reproduce:
1.satelllite-installer --enable-foreman-plugin-leapp
2.now you need to restart all services - foreman-maintain service restart - in order to have functional satellite

Actual results:
need to restart services

Expected results:
no need to restart services

Additional info:

Created attachment 1697604 [details]
Foreman Log

I couldn't reproduce the issue,
I tried Luna & satellite_provisioning on beaker machines and on both I was able to install Leapp plugin without any issues. 
Remote execution after Leapp installation was working as expected.

Beaker jobs:
Satellite: https://beaker.engineering.redhat.com/jobs/clone?job_id=4371943
Luna: https://beaker.engineering.redhat.com/jobs/clone?job_id=4370781

I just find out that after satellite-installer --enable-foreman-plugin-remote-execution-cockpit (the REX doesn't work) was successfully installed from dogfood, the foreman-maintain service restart was necessary to run REX and cockpit  normally.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Important: Satellite 6.8 release), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2020:4366