Merge changes I12e68fee,I1a7790d5,I2b957490,Ie711ce9f,Ieab2c892, ...

* changes:
  Improve param cache with entrySet
  Fix build warnings in snmp profile
  Fix the samples in utils test
  Remove extra line into multiple
  Correct the order of imports in http conn
  Fix assertion in http inputoutput test
  Update cli utils test to std compliant
  Fix import warnings
  Fix intendation warning in main test
  Fix import warnings
  Fix validation test
  Fix the style warings reported in registrar
  Remove unsed vars from Print testing
  Make the conditional check shorter
  Fix assertness in Result test
  Remove extra line chars
  Remove the build warning reported
  Fix OnapCommandSample with coding std.