Fix debug println

Signed-off-by: selmeci <roman.selmeci@infones.com>
Identification of cmd hash code uses UID from object

Signed-off-by: selmeci <roman.selmeci@infones.com>
Command return UID of commadn

Signed-off-by: selmeci <roman.selmeci@infones.com>
Merge branch 'master-zeromq-with-cleint-cache' into element-attribute-service-worker-cache-test
Bug fix: (uid ..) --> (id ..)

Signed-off-by: selmeci <roman.selmeci@infones.com>