Add negative tests for CLI

Negative tests were added, they check:
- that we can't create two workflows with the same name
- that we can't send command for nonexisting object
(for example get list of executions from nonexisting workbook)
- that we can't set more parameter than requires
- that we can't set less parameter than requires

Change-Id: I4c25aa4c83bdc6df782832d625cc821a389f784d
Implements: blueprint mistral-cli-integration-tests
Merge "Add negative tests for CLI"