Description of problem:

When using jsonrpc, reconstractMaster send 8 arguemnts instead of 9 as specifed in the schema. The missing argument is the *first* one, the hostId.

The schema:

##
# @StoragePool.reconstructMaster:
#
# Recover a Storage Pool by reconstructing its Storage Domains.
#
# @storagepoolID:           The UUID of the Storage Pool 
#
# @name:                    A human-readable name for the Storage Pool 
#
# @masterSdUUID:            The UUID of the Storage Domain that will be used as
#                           the master domain
#
# @masterVersion:           The Storage Domain version of the master domain
#
# @domainDict:              Storage Domain statuses to be restored
#
# @lockRenewalIntervalSec:  The number of seconds to wait before renewing lease
#                           (Should be less than @leaseTimeSec).  0 selects the
#                           default value.
#
# @leaseTimeSec:            The maximum number of seconds that the leaseholder
#                           may retain the lease without renewing it.  0 selects
#                           the default value.
#
# @ioOpTimeoutSec:          The maximum number of seconds that an I/O operation
#                           may take to complete.  0 selects the default value.
#
# @leaseRetries:            The number of times to attempt lease renewal before
#                           failure.  0 selects the default value.
#
# Since: 4.10.0

What vdsm get from engine (formatted):

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", line 480, in _serveRequest
    res = method(**params)
  File "/usr/share/vdsm/rpc/Bridge.py", line 254, in _dynamicMethod
    raise InvalidCall(fn, methodArgs, e)
InvalidCall: Attempt to call function:
<bound method StoragePool.reconstructMaster of  
<API.StoragePool object at 0x7f6a74512c10>> with arguments:
(
    u'iscsi-fc', 
    u'83535395-46b5-4dcb-bd52-fa17385104bc', 
    73, 
    {   
        u'89d14514-8e2f-4003-be81-efcb73f95b3d': u'active',
        u'4b7e5cbc-d8e2-4af4-b92b-649fb578b126': u'active',
        u'beaabe72-cfd6-4a60-8073-91d7dbbd4417': u'active',
        u'ed438add-6956-4861-b2f3-48fc90e6b86c': u'active',
        u'f1bef1e2-27c7-4917-8541-e3f255c16fb0': u'active',
        u'e624fcf2-8a4e-4dcf-9022-6845bad5fb6d': u'active',
        u'20501ea5-cf6b-453a-b23d-a708c28cec1f': u'active',
        u'04511d19-f03a-469a-9e31-ab51d6e75a56': u'active',
        u'5cc85983-5560-4286-a5b0-79bc16707ec6': u'active',
        u'04e604d3-71eb-41e0-a8a3-74404bdd9d75': u'active', 
        u'f3b93f29-1bcb-4805-bb8b-d4fbfaf1db3b': u'active', 
        u'fc348be8-18f4-42ff-8421-9043203e13a6': u'active', 
        u'983111eb-5fea-4899-833b-305e6fb91b47': u'active',
        u'952ca72b-06db-4c86-8dab-9c5c7bb28a8e': u'active',
        u'8101ba55-358e-472e-b95e-10d88f39d145': u'active',
        u'09049dc6-2007-492e-afd9-3ec201775b2a': u'active',
        u'd827b717-0a9b-4643-8f87-836c0bd3ff8a': u'active',
        u'b22b31b7-274f-4e87-9204-7526323eb907': u'active',
        u'83535395-46b5-4dcb-bd52-fa17385104bc': u'active',
        u'c78c9416-0cd1-49b0-b73f-c1b2004c3721': u'active',
        u'b91abd0b-e9e6-41a1-a957-5808872aa4fc': u'active',
        u'e96f971d-dae4-4599-8ec0-32bd31b88781': u'active',
        u'b8d480ea-0456-4372-a329-cf4ddcac5722': u'active',
        u'22def38e-d9b0-40d9-92ee-d3e891061600': u'active',
        u'83f4e073-7a35-45a6-a8b2-c2c3ee592e38': u'active',
        u'a9d6c1ee-78d2-42f9-96a8-a700a8c3f40e': u'active',
        u'71c03a25-d4e7-4d73-951e-181244ae053c': u'active',
        u'4cdaa642-92a5-4cd5-a8f1-6e45a3c28456': u'active',
        u'78604e0f-8b12-45b2-82f7-2606a94e0c3b': u'active',
        u'f6bf09ed-0409-4e8d-b915-d72b21652fe9': u'active'
    },  
    5,  
    60, 
    10, 
    3   
)
error: reconstructMaster() takes exactly 10 arguments (9 given)

Becasue reconstract fails, data center is unusable and there
is no way to recover from this.

Version-Release number of selected component (if applicable):
3.5.0-0.0.master.20140630172346.git994996b.fc19

How reproducible:
Always

Steps to Reproduce:
1. Start reconstract flow