KAA-237: Improve test coverage of log appenders, avro ui converter and control server components
KAA-237: Additional tests
KAA-237: Remove guava dependency in operation server module for cdap profile
KAA-237: Merge branch 'feature/KAA-237' of github.com:kaaproject/kaa into feature/KAA-237
Merge pull request #34 from kaaproject/feature/KAA-237

KAA-237: Improve test coverage of server components