The parameters with name like example_1, example_2 ... etc. cause
confusion while updating the api-ref docs like the examples below:
https://review.openstack.org/#/c/609639/https://review.openstack.org/#/c/609611/
This patch does the following changes :
1) Replace numbering in the parameter with relevant names
2) Clean up unused parameters
Change-Id: I35b343bf068281d729576e5ecc209bda60c28680
609412fcd2