Description of problem:
Killed the qemu process of a VM during a LSM operation. The create snapshot operation fails and the disk remains locked

Version-Release number of selected component (if applicable):
rhevm-3.6.0-0.11.master.el6.noarch
vdsm-4.17.2-1.el7ev.noarch

How reproducible:
Ran this once

Steps to Reproduce:
1. Create VM eith 2 disks
2. Create a Snapshot
3. Add 4 new disks
4. Start the VM
5. Start LSM of Block preallocated disk to another Block domain
6. After the Disk is locked and during the Create snapshot operation - Kill the qemu process id of the vm - The LSM OPERATION DOES NOT COMPLETE and THE DISK REMAINS LOCKED

Actual results:
The LSM OPERATION DOES NOT COMPLETE and THE DISK REMAINS LOCKED

Expected results:
The LSM OPERATION should fail gracefully and all locks on disks should be removed.

Additional info:
2015-08-25 13:35:01,798 INFO  [org.ovirt.engine.core.bll.tasks.AsyncTaskManager] (DefaultQuartzScheduler_Worker-14) [] Setting new tasks map. The map contains now 0 tasks
2015-08-25 13:35:01,798 INFO  [org.ovirt.engine.core.bll.tasks.AsyncTaskManager] (DefaultQuartzScheduler_Worker-14) [] Cleared all tasks of pool 'ed6cff1c-7104-409f-bb18-53fb9d29e01d'.
2015-08-25 13:36:04,311 INFO  [org.ovirt.engine.core.bll.MoveDisksCommand] (ajp-/127.0.0.1:8702-1) [d644176] Running command: MoveDisksCommand internal: false. Entities affected :  ID: c00771e2-8787-4c1f-9d52-c88b97c0ab69 Type: DiskAction group CONFIGURE_DISK_STORAGE with role type USER
2015-08-25 13:36:04,375 INFO  [org.ovirt.engine.core.bll.lsm.LiveMigrateVmDisksCommand] (ajp-/127.0.0.1:8702-1) [d644176] Lock Acquired to object 'EngineLock:{exclusiveLocks='[c00771e2-8787-4c1f-9d52-c88b97c0ab69=<DISK, ACTION_TYPE_FAILED_DISK_IS_BEING_MIGRATED$DiskName vm1_Disk3>]', sharedLocks='[52a7cbd6-07ec-4130-96a4-a8dad76b2fcb=<VM, ACTION_TYPE_FAILED_OBJECT_LOCKED>]'}'
2015-08-25 13:36:04,649 INFO  [org.ovirt.engine.core.bll.lsm.LiveMigrateVmDisksCommand] (org.ovirt.thread.pool-7-thread-27) [d644176] Running command: LiveMigrateVmDisksCommand Task handler: LiveSnapshotTaskHandler internal: false. Entities affected :  ID: c00771e2-8787-4c1f-9d52-c88b97c0ab69 Type: DiskAction group DISK_LIVE_STORAGE_MIGRATION with role type USER
2015-08-25 13:36:04,955 WARN  [org.ovirt.engine.core.bll.CreateAllSnapshotsFromVmCommand] (org.ovirt.thread.pool-7-thread-27) [50c8009c] CanDoAction of action 'CreateAllSnapshotsFromVm' failed for user admin@internal. Reasons: VAR__ACTION__CREATE,VAR__TYPE__SNAPSHOT,ACTION_TYPE_FAILED_DISKS_LOCKED,$diskAliases vm1_Disk3
2015-08-25 13:36:04,997 INFO  [org.ovirt.engine.core.bll.lsm.LiveMigrateVmDisksCommand] (org.ovirt.thread.pool-7-thread-27) [50c8009c] Lock freed to object 'EngineLock:{exclusiveLocks='[c00771e2-8787-4c1f-9d52-c88b97c0ab69=<DISK, ACTION_TYPE_FAILED_DISK_IS_BEING_MIGRATED$DiskName vm1_Disk3>]', sharedLocks='[52a7cbd6-07ec-4130-96a4-a8dad76b2fcb=<VM, ACTION_TYPE_FAILED_OBJECT_LOCKED>]'}'
2015-08-25 13:36:42,817 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.DestroyVDSCommand] (ForkJoinPool-1-worker-13) [] START, DestroyVDSCommand(HostName = level1_vm01, DestroyVmVDSCommandParameters:{runAsync='true', hostId='22e9edd5-fa6a-49b0-b875-625143058955', vmId='52a7cbd6-07ec-4130-96a4-a8dad76b2fcb', force='false', secondsToWait='0', gracefully='false', reason=''}), log id: 5c26681
2015-08-25 13:36:42,821 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.DestroyVDSCommand] (ForkJoinPool-1-worker-13) [] FINISH, DestroyVDSCommand, log id: 5c26681
2015-08-25 13:36:42,850 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (ForkJoinPool-1-worker-13) [] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VM vm1 is down. Exit message: User shut down from within the guest
2015-08-25 13:36:42,854 INFO  [org.ovirt.engine.core.vdsbroker.VmAnalyzer] (ForkJoinPool-1-worker-13) [] VM '52a7cbd6-07ec-4130-96a4-a8dad76b2fcb(vm1) is running in db and not running in VDS 'level1_vm01'
2015-08-25 13:36:42,873 INFO  [org.ovirt.engine.core.bll.ProcessDownVmCommand] (org.ovirt.thread.pool-7-thread-35) [fc63110] Running command: ProcessDownVmCommand internal: true.
2015-08-25 14:09:26,638 INFO  [org.ovirt.engine.docs.utils.servlet.ContextSensitiveHelpMappingServlet] (ajp-/127.0.0.1:8702-7) [] Successfully read CSH mapping file '/usr/share/doc/rhevm-doc/manual/en-US/csh.conf.d/webadmin/10-webadmin-en-US.json'