Implemented test_cloud_instance_discovery.py

1. Added cfme/test/cloud/test_cloud_instance_discovery.py, which is based on cfme/tests/infrastructure/test_vm_discovery.py

2. Added _load_details() to the Provider class in cfme/cloud/provider.py

3. Added a try/catch around call to is_vm_suspended() in Vm.delete_from_provider() for cases where the provider doesn't support returning Vm status (EC2)

4. Paginator.find() now raises an error if the element is not found

5. Misc. small bug fixes and improvements
Merge remote-tracking branch 'upstream/pr/1041' into HEAD

Conflicts:
	cfme/infrastructure/virtual_machines.py
cleanup/dedup code
Merge pull request #1041 and cleanup
please stop skipping the control tests
Merge pull request #1214 from dajohnso/stop_skipping

please stop skipping the control tests
Dockerbot updates and IP check change
Merge pull request #1216 from psav/dockerbot_ip

Dockerbot updates and IP check change
Fixed mistake made with IP check
Merge pull request #1217 from psav/dockerbot_ip

Fixed mistake made with IP check
Fix locator that was only upstream but is now also downstream
Update to task assigment
Merge pull request #1219 from psav/dkb-update

Update to task assigment
skip storage roles if not present
Merge pull request #1220 from dajohnso/fix_get_roles

skip storage roles if not present
template tester script knows how to tell trackerbot to retest a template
Merge branch 'template-tracker-tools'
use correct warn(ing) for logger
Merge pull request #1221 from dajohnso/fix_get_roles

use correct warn(ing) for logger