Fix wrong redirect url after instance resizing

When the instances is paginated in multiple pages, the redirect
url for instance resizing best to be the current page.

Change-Id: Ifa7f9c5cd57430640af35b49f93c1cb1c6c5521d
Closes-bug: 1354969
Fix order of arguments in assertEqual

Some tests used incorrect order assertEqual(observed, expected).

The correct order expected by testtools is
assertEqual(expected, observed).

Change-Id: Iabf6e55146412b57b6a6544f312f9510f762566a
Partial-Bug: #1259292
Need ability to evacuate host in syspanel

Implement host evacuate in the hypervisors panel.
An extra tab was added to show in the first one hypervisors
and on the second one compute host. on each compute host
that is down an evacuate host button was added.
If the user press the button a modal windows is shown to
request the needed data to perform the evacuation.

blueprint evacuate-host

Co-Authored-By: Leandro Costantino <leandro.i.costantino@intel.com>
Co-Authored-By: David Lyle <david.lyle@hp.com>

Change-Id: I57a16f99fddd84c287429085c7e90beb59a17aa3
Merge "Need ability to evacuate host in syspanel"
Merge "Fix wrong redirect url after instance resizing"
Merge "Fix order of arguments in assertEqual"
Merge branch 'master' of https://github.com/openstack/horizon