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Django requires it.

Fix bugs in server creation, in api/server.py:create_server().
More specifically:
 * Make sure to save() the vm object before calling vm.backend_id
 * Delete the vm instance if the RAPI call fails for any reason
 * Use different variable names for the server name at the API level
   and at the Ganeti backend level
 * Compute a random password *before* the CreateInstance() call to Ganeti
   [not currently used though]

Also patch the VirtualMachine model to safeguard against getting the
backend_id of a yet-unsaved instance of VirtualMachine.

Have api/util.py:isoparse() return naive datetime objects, in UTC.
Fixes #377.

Fix the fixtures for the Image model, removing references
to the size attribute, which no longer exists in the Image model
since commit 838c404d4.

Also fix unloadable fixtures, by removing stray comma chars
in JSON.

Please verify that it fixes #377

Refs: #377

manage.py test api should work now

Removed description and size from Image model.

Have vncauthproxy daemonize properly.
Introduce pidfile under /var/run/vncauthproxy,
logfile under /var/log/vncauthproxy.

Install a signal handler for fatal signals using gevent.signal().
This allows vncauthproxy to unlink its control socket and exit
gracefully when SIGTERM is received.

Initial commit of vncauthproxy, based on commit
5cf1d6553d72 from the git repository on code.grnet.gr.

* We don't use piston anymore
* We require dateutil now

Conflicts:
	api/actions.py
	api/errors.py
	api/handlers.py
	api/helpers.py
	api/servers.py

GET images now uses 1.1.redux.
Each image is checked for the following metadata values: description, size and serverID.
The first two are presented on the create images wizzard, while the third one forces the
image to be displayed on the custom images, instead of the standard ones

This fixes an issue with DBs with proper referential integrity (e.g.
MySQL) where a VM cannot be inserted prior to an Image that is
referenced from it.

* Removes piston dependency.
* Adds dateutil dependency.

Fixes #183 - Implement /servers
Fixes #185 - Implement /images
Fixes #245 - Details in exception handlers
Fixes #249 - Metadata handling
Fixes #253 - Transition to OpenStack API v1.1
Fixes #255 - Fix XML for addresses
Fixes #287 - Piston related bug
Fixes #289 - Support both XML and JSON
Fixes #309 - GUI not refreshing
Fixes #339 - Support API extensions
Fixes #359 - action returns serviceUnavailable
Fixes #361 - return dates with timezones
Refs #301 - Sanitization of API
Refs #315 - Replace API v1.1

Add support in api/v1.1redux for OOB consoles using VNC, refs #349.
More specifically:
 * Implement a new action ("console") for POST to /servers/id/action.
 * Extend api/servers.py to pass the Django request object to actions.
 * Import a version of the vncauthproxy control client under util/.
 * Extend the cloud command-line tool to support getting OOB console access.

Example json: {"console": {"type": "VNC"}}
Example XML:  <console type="VNC" />

To service the call, the API will contact a running vncauthproxy to set up a
time-limited port for VNC forwarding, where the client can connect.

This is WIP. Still missing:
 * A patched version of vncauthproxy.
 * Client-side (GUI) support for requesting an OOB console.

Improve handling of server deletions.
 * Have the API return a server's state as DELETED when
   the deleted flag has been set in the VirtualMachine model.
   This makes the server immediately invisible, instead of waiting
   for an indefinite amount of time for the Ganeti backend to remove
   the VM.
 * Set the deleted flag in the VirtualMachine model when Ganeti reports
   successful removal of an instance. This catches instance deletions
   initiated by the admin at the Ganeti backend.