Bug 1152973

Description of problem:
Stop VM fails through REST API because of Cannot remove Fs that does not exists in: /var/run/vdsm/payload

Version-Release number of selected component (if applicable):
vt5

How reproducible:
not sure
heppend once in MultiVM teardown of run 
http://jenkins.qa.lab.tlv.redhat.com:8080/view/Compute/view/3.5-git/view/Dashboard/job/3.5-git-compute-sla_ha_reservation/28/

Steps to Reproduce:
1. created 8 VMs
2. Start them
3. Move one host to maintenance
4. try to stop 1 VM

Actual results:
Stop operation failed.

Additional info:
Adding logs from machine running VMs (.39), other host and engine

supervdsm.log:
MainProcess|Thread-2906::DEBUG::2014-10-14 13:53:54,717::supervdsmServer::101::SuperVdsm.ServerCallback::(wrapper) call removeFs with ('',) {}
MainProcess|Thread-2906::ERROR::2014-10-14 13:53:54,717::supervdsmServer::105::SuperVdsm.ServerCallback::(wrapper) Error in removeFs
Traceback (most recent call last):
  File "/usr/share/vdsm/supervdsmServer", line 103, in wrapper
    res = func(*args, **kwargs)
  File "/usr/share/vdsm/supervdsmServer", line 360, in removeFs
    return mkimage.removeFs(path)
  File "/usr/share/vdsm/mkimage.py", line 143, in removeFs
    _P_PAYLOAD_IMAGES)
Exception: Cannot remove Fs that does not exists in: /var/run/vdsm/payload