ADD servicePath length checking in mongoUpdate processing at mongoBackend
FIX passing entire vector in mongoUpdate methods, instead of servciePathV[0]
ADD functionality to process servicePath vector in mongoBackend
ADD queryWithSeveralServicePaths unit test
FIX small typos in comments
FIX typo in comment
FIX typo in comment
FIX typo in comment
FIX typo in comment
Merge pull request #418 from telefonicaid/task/392_vector_mongoBackend

Multi servicePath implemented