integration tests: create separate profile for soa modules in tests/pom.xml

Integration tests repository contains soa ui bot tests that are not part of core components tests. It makes sense to separate soa modules from core modules in tests/pom.xml. New profile 'soa' will be introduced for that purpose.

• It means when you want to build and run the whole core test suite, just type: 'mvn verify'

• If you want to build and run core+soa test suite, type: 'mvn verify -P soa'