beaker 3.16.0

Highlight

• @lucywyman has started helping us test & document subcommands in #1378 & #1379

Details

CI Blocker

• BKR-1106 - Resolve issue with exporting environment variables on Cisco Nexus
• [RE-8805 (internal), #1381] - add gpg key auto-import to zypper check

Improvement

• BKR-954 - Add Ability to Disable Openstack Volume Management

Maintenance Tasks

• #1378 Add rough beaker subcommands doc
• #1379 Fix some markdown header errors
• #1385 add SSH setup link to vmpooler doc
• #1382 Update subcommand docs