CLOUDSTACK-5541: Template Creation from snapshot failed with S3 store.
Revert "CLOUDSTACK-4941:"

This reverts commit 231e7c01f2415c1f25d6a2715b7469fe7fcfe771.
CLOUDSTACK-669: convert volume attach/detach flows to make them be serialized with other VM operations
CLOUDSTACK-4941:
Adding the missing file
During HA and maintenance call different planners (if the original planners are not able to find capacity) which skip some heurestics