Description of problem:
Customers are expected to do any package install/update on satellite server via satellite-maintain command, in the Satellite upgrade guide we are suggesting customers to use "yum" command to update rubygem-foreman_maintain package, this package is whitelisted in foreman-protector plugin so it is allowed to update via yum. 

When we try to update the rubygem-foreman_maintain package using satellite-maintain command it executes satellite-installer command and that causes unexpected service downtime. 

Version-Release number of selected component (if applicable):
Satellite 6.x 

How reproducible:
Always 

Steps to Reproduce:
1. satellite-maintain packages install rubygem-foreman_maintain

which stops satellite services and execute the installer command. 

Actual results:

# satellite-maintain packages install rubygem-foreman_maintain
Running preparation steps required to run the next scenarios
================================================================================
Check if tooling for package locking is installed:                    [OK]
--------------------------------------------------------------------------------
 
 
Running install packages in unlocked session
================================================================================
Confirm installer run is allowed:
WARNING: This script runs satellite-installer after the yum execution
to ensure the Satellite is in a consistent state.
As a result some of your services may be restarted.
 
Do you want to proceed?, [y(yes), q(quit)] y
                                                                      [OK]      
--------------------------------------------------------------------------------
Unlock packages:                                                      [OK]
--------------------------------------------------------------------------------
Install packages: Loaded plugins: product-id, search-disabled-repos, subscription-manager
.
.
.
.
Updated:
  rubygem-foreman_maintain.noarch 1:0.5.3-1.el7sat                                                                                                                          
 
Complete!
                                                    [OK]
--------------------------------------------------------------------------------
Running satellite-installer --upgrade --disable-system-checks: Upgrading, to monitor the progress on all related services, please do:
  foreman-tail | tee upgrade-$(date +%Y-%m-%d-%H%M).log
Upgrade Step: stop_services...
Running Stop Services
================================================================================



Expected results:
We should allow and promote customers use satellite-maintain to update the rubygem-foreman_maintain package without running any extra installer related steps. 

Additional info: