Use Luxid for querying cluster tags instead of SSConf
Use Luxid for querying cluster tags instead of SSConf

Not only there is no reason to use SSConf for that.
Using it caused problems and failed tests as the query didn't get the
latest information due to distribution delays.

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

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