Angularize Instances Table

Summary:
Angularize Instances Table

Motivation:
Continue movement of shifting rendering logic that currently resides on the server to client side using AngularJS.

Description:

While following existing angularjs patterns in implementation (images and identity panels) this panel will also largely re-use the code written for the Searchlight UI. Since that UI is a plugin for Horizon we will move the code from that project into Horizon. An example of code moved over is the os-nova-servers module http://git.openstack.org/cgit/openstack/searchlight-ui/tree/searchlight_ui/static/resources/os-nova-servers

A large number of actions on instances are not implemented in the searchlight ui code, but there is a fallback path through to the legacy interface. Those missing actions will be implemented as part of this BP to remove the need for the legacy path. A brief look at the existing legacy actions that don't appear to have counterparts in the searchlight ui actions list results in this list of missing actions:

ToggleShelve
EditInstance
ConsoleLink
LogLink
ResizeLink
ConfirmResize
RevertResize
RebuildInstance
DecryptInstancePassword
AssociateIP
SimpleAssociateIP
SimpleDisassociateIP
UpdateMetadata
LockInstance
UnlockInstance
AttachVolume
DetachInterface
InstancesFilterAction

A number of steps will be taken to implement the basics of this BP:

1. copy the os-nova-servers module from searchlight ui
2. remove same from searchlight ui, dependent on the patch from #1
3. add an angularjs panel to Horizon for instances using that resource type
4. complete the missing actions as listed above

UX:
The UX will look and work similarly.

Outside Dependencies:
None.

Requirements Update Required:
None.

Doc Impact:
The table look and function will be the same, so I expect no document impacts.