ADD metadata ID in entity creation at mongoUpdate in mongoBackend
ADD attribute metadata ID processing for UPDATE and APPEND
ADD stubs for some missing unit tests that will be completed in next commits (DELETE cases and ilegal entity creation)
Merge branch 'develop' into feature/metadata_id
ADD missing functionality in mongoUpdate operation at mongoBackend to process DELETE with ID metadata in attributes and avoid ilegal entity creation
FIX activating some EXPECT_EQ lines previously commented
ADD support for attribute ID in queryContext at mongoBackend
FIX indentation typo
Merge branch 'develop' into feature/metadata_id
FIX raised during code review
Merge branch 'develop' into feature/metadata_id
FIX segfault in jenkins unit test
Merge pull request #134 from telefonicaid/feature/metadata_id

Attribute ID metadata support in updateContext and queryContext