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add new option `--suspended` in servers-list command to filter output suspended
servers

Conflicts:
	snf-cyclades-app/synnefo/api/management/commands/flavor-list.py
	snf-cyclades-app/synnefo/api/management/commands/server-list.py
	snf-cyclades-app/synnefo/api/networks.py
	snf-cyclades-app/synnefo/logic/rapi.py

Add extra support for changing link and mac_prefix. Also support
reserving and releasing IPs.

Use select_for_update method when accessing VM objects to prevent
race conditions. Also move start_action from logic to api.

Modify snf-ganeti-eventd and snf-dispatcher to handle jobs with
OP_NETWORK_SET_PARAMS opcode. Handling of these jobs is needed
to update the IP Pool of network, when reserving and releasing
IPs directly from the Ganeti backend.

Rename PRIVATE_FILTERED to correct PRIVATE_MAC_FILTERED.
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Do not allow api to create public networks and type other
than PRIVATE_MAC_FILTERED/PRIVATE_PHYSICAL_VLAN.

Rename PUBLIC_ROUTED_USE_POOL setting to PUBLIC_USE_POOL.

Let synnefo do IP pool management only if network is private or
PUBLIC_USE_POOL is True.
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Update networking setup to comply with synnefo 0.11 and ganeti
2.6.1+grnet features.

Add section for bridge and mac-prefix pools needed for private
networks.

Add mini guide to build snf-ganeti package from source.
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Add sections for every possible network flavor
(DEFAULT, IP_LESS_ROUTED, MAC_FILTERED, PHYSICAL_VLAN)
and the corresponding figure.
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Add conflicts_check option when creating and add network. Check only
if a network is public.

Let tags argument in rapi calls be a list.
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Get rapi client from snf-ganeti. Add depends argument (for chain jobs)
where needed.

Argument tags must be a list of strings and arguments add_reserved_ips and
remove_reserved_ips must be None or a list of strings.
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Ganeti by default checks for conflicting IPs when creating/connecting
networks. This feature can be bypassed for private networks. We do
not care for IP uniqueness in case of private networks as long as they
are level 2 isolated (mac filtering/physical vlans).
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

Return Forbidden(403) instead of Unauthorized(401) when refusing a
requested action, because the VM is suspended or the resource is public.
Unauthorized should be used only when authentication is required and has
failed or has not yet been provided.

Implement two new management commands for plankton.
- image-list: lists public images or all images available
to a user
- image-show: displays information about a public image

Also, this commit fixes a bug in server-show, when trying
to display an image that has been deleted.

Add extra command line arguments, to allow the user specify the
link and mac_prefix of the new network if needed.

Add BACKEND_PER_USER setting, a mapping from users to backends. This setting
can by used in order to bypass the default backend allocation process, and
allocate all the new VMs of a specific user to a specific Backend.

check_ganeti_master function was called in start before checking the
SNF_EVENTD_ENABLE config option. Move it just before eventd_start, just as in
restart.

Introduce the 'force-start' option in snf-ganeti-eventd init script.
When invoked with force-start snf-ganeti-eventd will start regardless
the node's role or the default settings. It will start:

 * even if the host is NOT the Ganeti master
 * even if snf-ganeti-eventd is NOT enabled in the defaults file

'force-start' should be used only during the preparation of a node to
become a Ganeti master a.k.a during a master-failover.

Modify snf-ganeti-eventd in order to get the name of the Ganeti cluster
from shared configuration files (ssconf) instead of performing a LUXI query.
Performing a LUXI restricts eventd to run only on the master node.

Do not allow any modification of any administratively suspended VM through the
API.

Add extra command line arguments, to allow the user specify the
link and mac_prefix of the new network if needed.

Return ServiceUnavailable, instead of OverLimit, when pools of bridges,
mac-prefixes or IPs run out of resources.