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Handle special case where an OP_INSTANCE_CREATE job which uses the
opportunistic locking feature fails. This failure is probably due to the
fact that all nodes may be already locked. In this case, make
snf-dispatcher retry the failed job with opportunistic locking turned
off. Also, make snf-ganeti-eventd include in the message the input of
the failed job.

Finally, add setting 'GANETI_USE_OPPORTUNISTIC_LOCKING' to turn on/off
the use of opportunistic locking feature.

* Pass missing argument to function
* Fix corner case where there are no externally reserved IPs.

If Ganeti has not enabled 'plain' or 'drbd' disk template, then it
reports 'dfree' as None. Fix this corner case by treating None as 0.

From version 2.7, Ganeti returns the network's UUID field in nics
'networks' attribute. Instead use 'networks.names' attribute to get
the network name.

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Use opportunistic locking, introduced in Ganeti 2.7, to allow parallel creation
of VMs in the Ganeti backend. When this option is set, Ganeti iallocator
will allocate the VM only to nodes that not locked (e.g. by other VM
creation). This may result in unbalanced clusters, but `hbal` can be
used to rebalance the clusters again.

* SimpleConfigReader has been removed. Use SimpleStore
* QUEUE_DIR has been moven from ganeti.constants to ganeti.pathutils
* _QueuedJob.Restore takes 2 more arguments
* cyclades: Group info is returned as list instead of string

Skip reconciliation for a network that does not exist in the DB, if
reconciliation is running without the '--fix' option.

Update Changelog, NEWS and docs.

Conflicts:
	version

Explicitly mention the change of logging location from
'/var/log/synnefo.log' to '/var/log/gunnicorn/synnefo.log' in the
upgrade notes to version 0.14.8.

Update the Admin Guide for two nodes to reflect that since v0.14.8
Synnefo ships an example configuration file for Gunicorn automatically
installed at '/etc/gunicorn.d/synnefo.example'.

Also, update the upgrade guide and changelog accordingly.

Retrieve images from plankton only if the user asked for the image name.
Otherwise just display the image ID. This will significantly speed up
the execution time of 'server-list' management command.

Synnefo 0.14.8 can still work with Django 1.2. The dependency will change
to Django >=1.2, <1.5 in Synnefo 0.15.

Workaround for race where OP_INSTANCE_REMOVE starts executing on Ganeti
before OP_INSTANCE_CREATE. If this is the case, OP_INSTANCE_REMOVE will
not wait for locks, instead it will fail because the instance has not
yet be created. Dispatcher will received the failed OP_INSTANCE_REMOVE
job and will query Ganeti to see if the instance exists. However, if the
OP_INSTANCE_CREATE has not yet started, the query will return 404, and
dispatcher will delete the instance from DB and release its IP
addresses. Following instance creations will fail because the IPv4
address will be already used in Ganeti.

This commit is a workaround for this issue until OP_INSTANCE_REMOVE
supports the 'depends' attribute. Until then, the API will raise 409 if
the job has not yet completed and the intance has not been added to
Ganeti.

Regular listing of servers, networks etc. usualy contain a "links"
field. Reflect that in api docs

Reject empty activation code requests

Add missing imports; remove call to sqlite3_changes; set key and val
in render_meta.

A user is accepted if moderated=True and is_rejected=False. Only
accepted users have entries in the quotaholder.

Personality injection documentation was misleading, allowing strings as
personality modes, when a personality mode could only be a number.