Fixes ceph-backup failure if original volume deleted

Fixes: bug #1199661

Change-Id: I21f979bf2c0ca6910a6437cb6277193f71fed664
Increase timeout period for clone volume.

Current timeout value for clone volume in the
SolidFire driver is 20 seconds, this is fine
in many cases however there seems to be a
number of customers doing clones of
volumes >= 400G.

A populated 400G volume is taking upwards of
35 seconds to clone in some cases resulting in failure.

There's no reason not to bump this timeout value up
significantly to a worst case scenario (ie multi-terrabyte volume).

Fixes bug: 1202007

Change-Id: I98c399f5d647e14f031018f7fc1cc43bb0d94c84
Merge "Fixes ceph-backup failure if original volume deleted"