Missing Virtualization Type column for Amazon Images

https://bugzilla.redhat.com/show_bug.cgi?id=1139835

The UI was not displaying the Virtualization Type for
Amazon Images.
Update button methods to handle Terminate instance button

https://bugzilla.redhat.com/show_bug.cgi?id=1122039
Merge pull request #548 from mkanoor/missing_textual_summary

Missing Virtualization Type column for Amazon Images
Updated helper method name

https://bugzilla.redhat.com/show_bug.cgi?id=1122039
Added missing icon

https://bugzilla.redhat.com/show_bug.cgi?id=1133849
Merge pull request #553 from epwinchell/cloud_tenants_icon

Added missing icon
Merge pull request #551 from bmclaughlin/terminate-via-quadicon

Update button methods to handle Terminate instance button