Status and action verb is different in the UI

[Amy Pattanasethanon]

In maas-ui, under take action button you can "Acquire" a machine(s) but under status the machine is "Allocated".

I think we should use the same verb to avoid confusion in the UI and CLI.

[Lee Trager (ltrager)]

In the backend and API allocate is used. You can find the full list of verbs used at

https://git.launchpad.net/maas/tree/src/maasserver/enum.py#n49

[Amy Pattanasethanon (amylily)]

should we change the action verb in the UI from "acquire" to "allocate"? I think it makes more sense, since we also use "allocate" in the current CLI.

[Kit Randel (blr)]

Lee it looks like the backend isn't consistent there either, with `node_action.Acquire` and `node_constraint_filter_forms.AcquireNodeForm`, would it be worth refactoring this?