Add UpdateLocksWaiting and HasPendingRequest to MockClient
Add UpdateLocksWaiting and HasPendingRequest to MockClient

...and implement so in the most trivial way, always suceeding
immediately. The point is, these mocks are not used to test
the mcpu that uses the WConfD client but, instead, indirectly
in our so called "unit tests" for the logical units that call
the real mpcu.

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

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