Description of problem:
Add a flag to set the heap size (Xms and Xmx) for tomcat. At this moment, there is an option only for puppetserver

Version-Release number of selected component (if applicable):
all of them

How reproducible:
100%

Steps to Reproduce:
1. install satellite, the default Xmx and Xms is 2GiB
2. If you need to change the heap size for tomcat, you need to add it via custom-hiera
3.

Actual results:
Only via custom hiera

Expected results:
Flag via satellite-installer that will set the heap size for tomcat

Additional info: