Pagination does not work properly in Volume snapshot panel

[Paul Karikh]

Steps to repoduce:

- Login as admin
- Go to admin settings
- Set "Items Per Page" to 2.
- Go to Projects-Compute->Volumes
- Create a volume if no volumes are present
- Create 5 snapshots of a volume via dropdown menu
- Go to "Volume Snapshots" tab
-> snapshot#5 and snapshot#4 are displayed, next button is avalable
- Click "Next"
- Click "Next"
-> snapshot#1 is displayed
- Click "Prev"
- Click "Prev"

Expected result:
- snapshot#4 and snapshot#5 are displayed, prev button is absent

Actual result:
- snapshot#3 and snapshot#4 are displayed, prev button is present

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/300071

[Rob Cresswell (robcresswell-deactivatedaccount)]

Removed assignee due to inactivity and reset status.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Rob Cresswell (<email address hidden>) on branch: master
Review: https://review.openstack.org/300071
Reason: Abandoning for now, hasn't been updated in 4 months. Feel free to restore and update if you get time to work on the patch. Thanks!

[OpenStack Infra (hudson-openstack)]

Change abandoned by Rob Cresswell (<email address hidden>) on branch: master
Review: https://review.openstack.org/300071
Reason: Due to inactivity

[Ivan Kolodyazhny (e0ne)]

The other steps to reproduce the issue:
1. Set page size to 1
2. Create 2 volumes (A and B)
3. On the volumes tab, open the last page
4. Delete volume B

Actual result:
"No items to display."

Expected result:
Volume A is shown

[Gary W. Smith (gary-w-smith)]

This appears related to bug 1255562

[OpenStack Infra (hudson-openstack)]

Change abandoned by Ivan Kolodyazhny (<email address hidden>) on branch: master
Review: https://review.openstack.org/300071
Reason: This review is > 4 months 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.