Inaccessible datastores now ignored for stats

CFME doesn't care about inaccessible datastores in VMware so now neither
do we.
Merge pull request #1363 from psav/inacc_datastores

Inaccessible datastores now ignored for stats
Fixed on_details issue
Merge pull request #1364 from psav/on_details_fix

Fixed on_details issue
Automated timeline testing for cloud
Updated some things
Merge pull request #1351 from psav/fix_cloud_timelines

Fix cloud timelines
Updated merkyl to 1.0.2

Merkyl needed to be upgraded due to a fault in the raw get() method used
in the tracker.
Fixed bug in artifactor fixture

Artifactor was never telling merkyl to cleanup as the artifactor server
was being shutdown before the 'merkyl_teardown' event was being fired.
Added new merkyl fixture

Request to be able to add log files to merkyl on the fly and then
retrive and search their contents. To do this the following was
implemented.
* Added MerkylInspector class with the following methods
 * add_log() - adds a log file to the current merkyl instance
 * get_log() - gets the contents of a previously added log
 * search_log() - convenience function doing the get_log() and a simple
   search in one go.
* Added merkyl_inspector fixture which returns a MerkylInspector for the
  current appliance.
Check if providers can suspend VMs first
Fix infra host update submit
Merge pull request #1368 from psav/merkyl_update

Merkyl update
Use Table methods for zone selection
Merge pull request #1369 from jkrocil/fix-EC2-suspend

Check if providers can suspend VMs first
Merge pull request #1370 from jkrocil/fix-infra-host-update

Fix infra host update submit
Merge pull request #1371 from jkrocil/fix-zone-test

Use Table methods for zone selection
Fix datastore listing on vsphere

vmware datastore listing was recently changed to ignore inaccessible
datastores. In fact this was not the problem, CFME does not show up a
datastore on a provider if it is not mounted by any hosts.

This commit changes the datastore listing function to mimic that
behaviour by checking if the datastore is mounted on any hosts.
Merge pull request #1373 from psav/fix_datastore

Fix datastore listing on vsphere
Wait time change for requests