core: supress findbugs warning in StorageServerConnectionCommandBase
core: supress findbugs warning in StorageServerConnectionCommandBase

after change I0fc70dd4e7988f4ea4597f016c9de8419c17adfa findbugs
complains about null pointer dereference of connections which is wrong.

Change-Id: I139f33ddba33cfb109145505afc1aea609c82807
Signed-off-by: Liron Aravot <3348b1f361b8c114be0a6d9109c20a9213007b88@redhat.com>

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