Merge changes Ib986931f,I3abfe1a5,I2df477bb,Iae51b3c6,Id22e629a, ...

* changes:
  Update OCLIP commands details
  Update the architecture document with cache
  Remove unused images in docs
  Add onap cmd alias in CLI docker
  Set CLI version to 2.0.0
  Set logging level to INFO by default
  Add onap cmd alias to oclip
  Disable debug while starting cli in ALL mode