Support for current update workflow
add retry for results refresh

Logins were proving problematic and a single retry really seemed to help
Merge pull request #233 from dajohnso/retry-refresh

add retry for results refresh; see https://github.com/RedHatQE/cfme_pages/issues/234
Merge pull request #231 from apagac/rh_updates_revised

Support for current update workflow
Add AWS IAM authentication mode

Add AWS IAM authentication test
Adding changes in support of VM -> Template provisioning
Merge pull request #237 from jkrocil/aws_iam_auth_mode

Add AWS IAM authentication mode
Merge pull request #236 from rlandy/provisioning_pgs

Adding changes in support of VM -> Template provisioning