Verify extRepr-equal states are equal on updateLocksWaiting
Verify extRepr-equal states are equal on updateLocksWaiting

Add a test that verifies that extRepr-equal states cannot be
distinguished by updateLocksWaiting-transitions. To obtain
extRepr-equal states, we compare each state to the one computed
from its extensional representation.

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

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