Verify that an owner gets notified
Verify that an owner gets notified

Add a basic sanity check on notification: if a request is blocked,
and all old pending owners and blockers give up their resources,
the owner gets notified of his lock being granted.

Signed-off-by: Klaus Aehlig <4ce51de36d9068cd7db2eec1151e0f3f95419008@google.com>
Reviewed-by: Petr Pudlak <9d19625f8ee825a2c398462ed335cbcf98f79c32@google.com>

leshchevds/ganeti,ganeti-github-testing/ganeti-test-1,apyrgio/ganeti,mbakke/ganeti,yiannist/ganeti,ganeti-github-testing/ganeti-test-1,dimara/ganeti,bitemyapp/ganeti,yiannist/ganeti,andir/ganeti,leshchevds/ganeti,onponomarev/ganeti,ganeti/ganeti,bitemyapp/ganeti,mbakke/ganeti,andir/ganeti,grnet/snf-ganeti,apyrgio/ganeti,ganeti/ganeti,dimara/ganeti,leshchevds/ganeti,andir/ganeti,onponomarev/ganeti,grnet/snf-ganeti,mbakke/ganeti,ganeti/ganeti,yiannist/ganeti