Automate Explorer instance tests, fix exists()
Placement Policy for RHEV VMs.

Conflicts:
	utils/mgmt_system.py
Check for placement policy affinity

(cherry picked from commit b6e3bbe8920cace995e67abfc023dd1ccc6ecce6)
Check if key exists in kwargs.

(cherry picked from commit a3562677676fa9ab24df6014432a24876ba8ad8c)
Downloading reports.
Moved appliance tests to cfme/ subdir, modified style of it + style of utils/tests/, removed Unittestzero
Fixed for new code
Merge pull request #679 from mfalesni/appliance_tests_move

Style consistency update
Merge pull request #654 from weissjeffm/automate5

Automate Explorer instance tests, fix exists()
Added fix for processing candu
Merge pull request #667 from psav/candu_fix

Added fix for processing candu
Merge pull request #659 from akrzos/perf_rhev_placement_policy

Perf rhev placement policy
Merge pull request #243 from mfalesni/bz1021646

BZ 1021646: check download
Remove appliance.db_session()

Fix appliance.rename()
Merge pull request #685 from jkrocil/utils-appliance-fix

Fix utils.appliance