Description of problem:

today, there are validation on domain integrity, and we only count connectStorageServer (which deals with iscsi and multi path session but not with the actual data), which affects the following case: 
- domain no longer exists, engine-core sends connectStorageServer with domain params, connectStorageServer returns True, and domain move to up, later on, domain monitoring thread sample domain, see's that its broken (there is not data, no vg), try to deactivate it and fails (different issue - but yet again, we shouldn't enter this flow at all).

btw - connectStoragePool might protect such cases, but its only true when faulty domain is master domain ..  

I suggest to add a simple test that checks domain integrity, to prevent such cases. 

Thread-17::INFO::2012-02-13 23:00:16,414::logUtils::37::dispatcher::(wrapper) Run and protect: connectStorageServer(domType=3, spUUID='2319b7ff-09f6-488c-83c4-aa78139db3b4', co
nList=[{'connection': '10.35.115.150', 'iqn': 'iqn.2008-05.com.xtremio:001b21b545c0', 'portal': '1', 'user': '', 'password': '******', 'id': 'e9f45f40-3698-406c-ae69-3c3de0ad8e
52', 'port': '3260'}, {'connection': '10.35.115.151', 'iqn': 'iqn.2008-05.com.xtremio:001b21b545c1', 'portal': '1', 'user': '', 'password': '******', 'id': '532f818f-cf8f-4e46-
b34c-c6a7b1cd18ef', 'port': '3260'}, {'connection': '10.35.116.153', 'iqn': 'iqn.2008-05.com.xtremio:001b21b54535', 'portal': '1', 'user': '', 'password': '******', 'id': '6b30
5599-3733-4adc-8759-3bccb7a0d997', 'port': '3260'}, {'connection': '10.35.64.81', 'iqn': 'script11', 'portal': '1', 'user': '', 'password': '******', 'id': 'ed288a23-0928-4bb6-
bc9d-af6c11d87aea', 'port': '3260'}, {'connection': '10.35.116.152', 'iqn': 'iqn.2008-05.com.xtremio:001b21b54534', 'portal': '1', 'user': '', 'password': '******', 'id': '12d1
19de-6ca2-45d0-b2f7-216f7d61ee15', 'port': '3260'}, {'connection': '10.35.115.152', 'iqn': 'iqn.2008-05.com.xtremio:001b21b54534', 'portal': '1', 'user': '', 'password': '*****
*', 'id': 'd2ea7c66-f932-4536-8574-96fd26f324ad', 'port': '3260'}, {'connection': '10.35.116.151', 'iqn': 'iqn.2008-05.com.xtremio:001b21b545c1', 'portal': '1', 'user': '', 'pa
ssword': '******', 'id': 'd5f207fe-16f1-408a-b038-902509f45e37', 'port': '3260'}, {'connection': '10.35.116.150', 'iqn': 'iqn.2008-05.com.xtremio:001b21b545c0', 'portal': '1', 
'user': '', 'password': '******', 'id': '4ab33648-2156-49b9-91e0-00797ad23f4d', 'port': '3260'}, {'connection': '10.35.115.153', 'iqn': 'iqn.2008-05.com.xtremio:001b21b54535', 
'portal': '1', 'user': '', 'password': '******', 'id': '4b4babb3-e185-42b7-aa4a-e212cdd2969c', 'port': '3260'}], options=None)


Thread-14438::INFO::2012-02-13 22:28:16,908::logUtils::39::dispatcher::(wrapper) Run and protect: connectStorageServer, Return response: {'statuslist': [{'status': 0, 'id': 'e9
f45f40-3698-406c-ae69-3c3de0ad8e52'}, {'status': 0, 'id': '532f818f-cf8f-4e46-b34c-c6a7b1cd18ef'}, {'status': 0, 'id': '6b305599-3733-4adc-8759-3bccb7a0d997'}, {'status': 0, 'i
d': 'ed288a23-0928-4bb6-bc9d-af6c11d87aea'}, {'status': 0, 'id': '12d119de-6ca2-45d0-b2f7-216f7d61ee15'}, {'status': 0, 'id': 'd2ea7c66-f932-4536-8574-96fd26f324ad'}, {'status'
: 0, 'id': 'd5f207fe-16f1-408a-b038-902509f45e37'}, {'status': 0, 'id': '4ab33648-2156-49b9-91e0-00797ad23f4d'}, {'status': 0, 'id': '4b4babb3-e185-42b7-aa4a-e212cdd2969c'}]}
Thread-14438::DEBUG::2012-02-13 22:28:16,908::task::1174::TaskManager.Task::(prepare) Task=`45f791c0-8692-4c1b-a65a-f32fd4fa5167`::finished: {'statuslist': [{'status': 0, 'id':
 'e9f45f40-3698-406c-ae69-3c3de0ad8e52'}, {'status': 0, 'id': '532f818f-cf8f-4e46-b34c-c6a7b1cd18ef'}, {'status': 0, 'id': '6b305599-3733-4adc-8759-3bccb7a0d997'}, {'status': 0
, 'id': 'ed288a23-0928-4bb6-bc9d-af6c11d87aea'}, {'status': 0, 'id': '12d119de-6ca2-45d0-b2f7-216f7d61ee15'}, {'status': 0, 'id': 'd2ea7c66-f932-4536-8574-96fd26f324ad'}, {'sta
tus': 0, 'id': 'd5f207fe-16f1-408a-b038-902509f45e37'}, {'status': 0, 'id': '4ab33648-2156-49b9-91e0-00797ad23f4d'}, {'status': 0, 'id': '4b4babb3-e185-42b7-aa4a-e212cdd2969c'}
]}

  VG                                   #PV #LV #SN Attr   VSize   VFree  
  05a78fd0-1f41-43cc-b6cd-490e18ac6715   2 309   0 wz--n- 599.25g 238.38g
  7aa228a1-f4aa-4e55-aca1-a3d802ee09ad   1   6   0 wz--n-  99.62g  95.75g
  vg0 

1script11 dm-35 IET,VIRTUAL-DISK
size=15G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  `- 350:0:0:1 sdm  8:192  active ready running

[root@nott-vds3 ~]# iscsiadm -m session 
tcp: [349] 10.35.64.81:3260,1 script11