Cloned from launchpad blueprint https://blueprints.launchpad.net/horizon/+spec/volume-bootable-flag.

Description:

Add a "Bootable" checkbox to the "Project -> Volumes" create and edit panels.

Motivation:
This will expose the current Cinder CLI command "cinder set-bootable" in the Horizon UI.

$ cinder help set-bootable
usage: cinder set-bootable <volume> <True|true|False|false>

Update bootable status of a volume.

Positional arguments:
  <volume>                             ID of the volume to update.
  <True|true|False|false>   Flag to indicate whether volume is bootable.

UX:
1) Need to add a new "Bootable" checkbox to the "Project -> Volumes" "Create Volume" dialog.  It will be shown/hidden and set to a default value based on the following:

Volume Source = "Image" - checkbox will be hidden. Created volume will be bootable.
Volume Source = "No source, empty volume" - checkbox will be shown and set to false.
Volume Source = "Volume" - checkbox will be shown and will be set to the "bootable" state of the selected source volume.

In the case of creating a volume from an "image", the "cinder create" volume command will automatically make the volume bootable.
In the case of creating a volume from no source, if the user checks the "Bootable" flag, an additional "cinder set-bootable" call will be made.
In the case of creating a volume from a source volume, an additional "cinder set-bootable" call will be made IF the new volume will have a different bootable state than that of the source volume.

2) Need to add a new "Bootable" checkbox to the "Project -> Volumes" "Edit Volume" dialog.  It will be initially set to the current bootable state of the volume.

Outside Dependencies:
N/A

Requirements Update Required:
N/A

Doc Impact:
N/A

Specification URL (additional information):

None