* Show Host Details
- The parameters in 'resource' object are prefixed
with 'resource.' instead of 'host.'.
- The types of 'cpu', 'memory_mb' and 'disk_gb' are
changed to 'integer'.
- The descriptions of 'cpu', 'memory_mb' and 'disk_gb'
are changed (clearer).
* Update Host status
- The 'status' and 'maintenance_mode' in request
parameters are changed to 'body' parameters
instead of 'path' parameters.
- The 'status' and 'maintenance_mode' in request
parameters are changed to either 'enable' or
'disable'.
- The 'status' and 'maintenance_mode' in response
parameters are changed to 'optional'.
Change-Id: Ic6bffca8b1dfaa9284a72145f3e1f894acb306e3
Closes-Bug: #1653884