Storwize/SVC: fix attach bug for live migration.

Add force flag for mkvdiskhostmap command to allow multi host mapping

Change-Id: I290a5986b213a0aaeae0d0ea0ad57350c9dee3c9
Fixes: bug #1179773
(cherry picked from commit 88c8b42194333566c085489b160d77fc71b61b86)
Add _create_volume to ThinLVMVolumeDriver

Previously, _create_volume from LVMISCSIDriver would be called
when the volume manager calls create_volume_from_snapshot.

Fixes bug: 1192601

(cherry picked from commit 79a402d07502ac34bc0ec485b21b0be50ba807a7)

Conflicts:
	cinder/volume/drivers/lvm.py

Change-Id: I5cca287e8204c4647a5f09df961d9a76d0b38c42
Handle ECONNREFUSED exception in SolidFire driver.

The SolidFire driver wasn't handling connection exceptions
during init (capacity updates from scheduler).

This patch add a try/except wrap around the two places
that this is called and logs and error rather than crashing
cinder-volume service.

Fixes bug: 1195910

Change-Id: I30347cc0973bbf9dbc30ea02e204560095fc75b4
(cherry picked from commit d596bfe6562307343858f419062756640000b0c8)
Merge "Storwize/SVC: fix attach bug for live migration." into stable/grizzly
Merge branch 'andreibranch3' of github.com:aostapenko/cinder into stable/grizzly
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