core: Update storage_server_connections SPs user name variable
core: Update storage_server_connections SPs user name variable

Upgrade script 03_06_1640 changed the columns user_name and password in
storage_server_connections to TEXT rather than VARCHAR(50) yet the
user name var within the insert and update script remained VARCHAR(50)
making the upgrade pointless, this patch changes it

Change-Id: I7319dacacc044e3d56e2be50afff9021f1c999b9
Signed-off-by: Tal Nisan <1e9a2a77a0973eec628efceb273ea890910487e0@redhat.com>

walteryang47/ovirt-engine,eayun/ovirt-engine,zerodengxinchao/ovirt-engine,zerodengxinchao/ovirt-engine,OpenUniversity/ovirt-engine,OpenUniversity/ovirt-engine,eayun/ovirt-engine,OpenUniversity/ovirt-engine,walteryang47/ovirt-engine,walteryang47/ovirt-engine,yapengsong/ovirt-engine,walteryang47/ovirt-engine,zerodengxinchao/ovirt-engine,yapengsong/ovirt-engine,yingyun001/ovirt-engine,zerodengxinchao/ovirt-engine,eayun/ovirt-engine,yingyun001/ovirt-engine,yingyun001/ovirt-engine,yapengsong/ovirt-engine,yingyun001/ovirt-engine,OpenUniversity/ovirt-engine,walteryang47/ovirt-engine,eayun/ovirt-engine,OpenUniversity/ovirt-engine,zerodengxinchao/ovirt-engine,yapengsong/ovirt-engine,yapengsong/ovirt-engine,yingyun001/ovirt-engine,eayun/ovirt-engine