Description of problem:
There's missing help text explaining CPU calculations in Catalog drawer
for "CPU | Memory" field and misleading help texts for the same field
present in more places:

• Template Details tab
• Review and create VirtualMachine page (customize VM)
• VirtualMachineInstance Details tab

Version-Release number of selected component (if applicable):
4.13

How reproducible:
always

Steps to Reproduce:
1. Access Catalog drawer or any of the problematic places mentioned above
2. Check "CPU | Memory" field in the page

Actual results:
Missing help text explaining CPU calculations in Catalog drawer.
And in the misleading help texts, it says "This VirtualMachine ..."
although it's for the other resource, not a VM, or a VM is just being
created, not existing yet, which is confusing.
That means 4 places with presence of "CPU | Memory" waiting for improvement.

Expected results:
The expected results for Templates and for VMIs are not clear yet. But it's
clear that the help texts shouldn't be confusing. They shouldn't display
"This VirtualMachine has ..." anywhere else except VM Details page.

For missing help text in the drawer and incorrect help text when
customizing VM, "The VirtualMachine will have ..." could be displayed instead.
See https://bugzilla.redhat.com/show_bug.cgi?id=2172390#c16

Additional info:

Possible solutions for Templates and VMIs:
The help text may reflect the resource that is related to the provided information.
Maybe "This Template has..."... or "This VirtualMachineInstance has...".

Another solution is to make it more universal by NOT mentioning "VirtualMachine"
or any specific resource at all, so we could use the same help text for
"CPU | Memory" field anywhere in the whole UI.
Maybe we could display "This resource has 1 sockets, 1 threads, and 3 cores."
That would be the best, IMO.