nova boot help should have flavor as a positional parameter

[Amandeep]

when booting an instance then wrong information of argument shown at cli, Here without with --flavor and --image we unable to boot a vm. So, these parameters should be positional not optional argument.

steps to replicate :

step 1:

$ nova help boot

Boot a new server.

Positional arguments:
  <name> Name for the new server

Optional arguments:
  --flavor <flavor> Name or ID of flavor (see 'nova flavor-list').
  --image <image> Name or ID of image (see 'nova image-list').

step 2:

$ nova boot vm_1

ERROR (CommandError): you need to specify a Flavor ID

Step 3

$ nova boot --flavor 42 vm_1

ERROR (CommandError): you need to specify at least one source ID (Image, Snapshot, or Volume), a block device mapping or provide a set of properties to match against an image

$ nova boot --flavor 42 --image <image-id>

then we able to boot a vm

expected result:

$ nova help boot

Boot a new server.

Positional arguments:
  <name> Name for the new server
  <flavor> Name or ID of flavor (see 'nova flavor-list').
  <image> Name or ID of image (see 'nova image-list').

[melanie witt (melwitt)]

The reason --image isn't a positional argument is because it isn't required.

See example 4 [1] where the command creates a bootable volume from an image before the instance boots. Here, --image is not specified.

[1] http://docs.openstack.org/user-guide/content/create_volume_from_image_and_boot.html

[Joe Gordon (jogo)]

I think the flavor is still required. Also novaclients documentation on what is needed isn't very useful. To figure out what is needed googling is often required, but it shouldn't be.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/295681

[OpenStack Infra (hudson-openstack)]

Change abandoned by Sean Dague (<email address hidden>) on branch: master
Review: https://review.openstack.org/295681
Reason: This review is > 6 weeks without comment, and failed Jenkins the last time it was checked. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and leaving a 'recheck' comment to get fresh test results.