[Bug 1725421] Re: [mitaka] Hide nova lock/unlock if nova api <2.9 and when >= 2.9, "Lock/Unlock Instance" should not be shown at same time.

[Corey Bryant]

Shane, thanks for the patch. I have the package ready to upload. I'm
combining it into 2:9.1.2-0ubuntu4 with the fix for LP: #1613900, which
hasn't been accepted into proposed yet (meltdown/spectre are blocking LP
builders). I've requested the current upload of 2:9.1.2-0ubuntu4 to be
rejected and will then upload the same version with both bugs fixed in
one version.

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Title:
  [mitaka] Hide nova lock/unlock if nova api <2.9 and when >= 2.9,
  "Lock/Unlock Instance" should not be shown at same time.

Status in Ubuntu Cloud Archive:
  Invalid
Status in Ubuntu Cloud Archive mitaka series:
  Triaged
Status in horizon package in Ubuntu:
  Invalid
Status in horizon source package in Xenial:
  Triaged

Bug description:
  [Impact]

  * Similar/related to lp:1505845, which was fixed for Newton.
    Lock/unlock options are displayed in Horizon despite Nova API <2.9,
    which causes user confusion.
  * Additionally, when Nova API is >= 2.9, the actions "Lock Instance"
    and "Unlock Instance" should not be shown at the same time.

  [Test Case]

  case 1:
    1. Deploy nova and horizon both at mitaka level.
    2. Log into Horizon dashboard.
    3. Create new instance.
    4. Wait for instance to switch to 'running' state.
    5. On the newly created instance, under Actions, you'll
       see both 'Lock Instance' and 'Unlock Instance' are
       available, even after locking the instance.

  case 2:
    1. Deploy nova at kilo level and horizon at mitaka level (test with Nova API < 2.9)
    2. Log into Horizon dashboard.
    3. Create new instance.
    4. Wait for instance to switch to 'running' state.
    5. On the newly created instance, under Actions, you'll
       'Lock Instance' and 'Unlock Instance' should be hidden.

  [Regression Potential]

  * Regression potential is low. This bug has been fixed in all releases of
    OpenStack starting with Newton. The patch did have to be modified
    slightly to apply to mitaka.

  [Discussion]

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