Description of problem:

EC2 security groups do not get auto-populated when we use a compute profile. The security groups only appear when you select a dummy network.

How reproducible: Always

Steps to Reproduce:
1. Create a ec2 compute profile with sec groups
2. Try to populate the content into "New host" form by selecting the compute profile.

Actual results:

Security groups are not automatically populated.

Expected results:

Sec groups need to populate after selecting the compute profile.