[PATCH aeolus-cli 0/2] Refactor option parser to resolve BZ #754956

The bug showed that options definitions for OptionParser was duplicated. There were some options defined more than once and only last definition takes action so some parameters did not work. OptionParser did not distinguish between commands (list, push, delete, etc.) used in aeolus-cli Me and mzatko refactored code for parsing cli options and extended test coverage of this code.