orchestration: Update API doc for stacks_list

Add the supported query parameters

Change-Id: Ib8d875537d731505c9f27ac0a229c0acd5bb8831
Closes-Bug: #1269859
orchestration: Add API docs for build_info

Change-Id: I8204cd783a0d1e186746f3d70c3c8e2196aa0651
Closes-Bug: #1269857
Remove extra whitespace at EOL

Found by niceness gate

Change-Id: Ia644fac13419beff7ee57dd11f42f62ecd01ece9
Merge "orchestration: Update API doc for stacks_list"
Merge "orchestration: Add API docs for build_info"
Merge "Remove extra whitespace at EOL"