Synnefo

gtools: Make eventd send beparams and result

Update 'snf-ganeti-eventd' daemon to send the requested beparams in
case of 'OP_INSTANCE_SET_PARAMS' opcodes. Also, if the opcode is
in success state, send the 'result' attribute of Ganeti jobs.

Refs #3870

cyclades: Add backend function for resizing vm

Add 'resize_instance' backend function for resizing a vm. This command
issues an OP_INSTANCE_MODIFY job with the specified beparams, which
currently are vcpus, minmem and maxmem.

Refs #3870

cyclades: Handle Ganeti msgs for resized VMs

Handle 'OP_INSTANCE_SET_PARAMS' notifications from Ganeti that have
'beparams' attribute, which corresponds to resized VMs. In such
case, the corresponding flavor is found an the VM in DB is updated to
have this flavor.

Refs #3870

cyclades: Implement resize action API call

Implement resize API call, which is a POST at
/servers/<server_id>/action' with body: {"resize": {"flavorRef": <flavor_id>}}

The resize can only be performed if the disk size and disk template of
the new flavor are the same with the old one, and if the VM is in
STOPPED status.

Also add 'RESIZE' operstate to VirtualMachine

Refs #3870