try harder when connecting the storage
try harder when connecting the storage

the agent has to wait between attempts to connect the storage
to give vdsm some time to initialize

Change-Id: I4c512aad490366b0fbd890d156b37243993dc498
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1093621
Signed-off-by: Jiri Moskovcak <2606f90654d9fc12ac6975e829256af409218774@redhat.com>

oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha