Description of problem:
Info icon related to memory on Virtual Machine tab of Create host doesn't work.

How reproducible:
always

Steps to Reproduce:
1. create host group with compute resource and compute profile
(I had libvirt compute resource)
2. Go to create Host page
3. use host group created previously
4. go to virtual machine tab
5. click on memory icon

Actual results:
- no information displayed regarding memory.
- memory size is not displayed in MB/GB.

Expected results:
- information displayed regarding memory.
- memory size is displayed in MB/GB.