Description of problem:
There is not option to search for machines that are powered on.

How reproducible:
Try and search for machines (VMs) that are powered on

Steps to Reproduce:
1. Go to hosts page
2. Click search bar
3.

Actual results:
You notice that are option exists to search for machines in a certain power state

Expected results:
A search option for machines in a certain power state exists (paused, powered on, powered off), for easy scheduling of Ansible jobs (for powered on machines), or power events (powering on machines that are off).

Additional info:
This would be extra useful when scheduling a recurring job to run Ansible roles at a set interval. You only want those to run on machines that are powered when the job is run.