Fix v3 API extension names for camelcase

Most v3 API names are camelcase, but few APIs are not.
This patch changes them to camelcase for the consistency.

Change-Id: I0dc6c23ffcdcf97fc52d3575d521692805ffd9e3
Closes-Bug: #1315597
Make xenapi agent code use Instance object for updates

This makes the agent code use the Instance object that it is passed
to do the updates, instead of calling back to the old-style virtapi
instance_update() method.

Related to blueprint virt-objects-juno

Change-Id: Ied8891c974970a25f135a88303789d0c074741ee
Convert xenapi/vmops uses of instance_update to objects

This converts uses of the old instance_update() conductor method
to use the instance object in xenapi/vmops.

Related to blueprint virt-objects-juno

Change-Id: I5fab06934a7f3e7426631bb75eafe8b0d4b0806d
Make vmwareapi/vmops use Instance object for updates

This converts the one use of virtapi.instance_update() in vmops to
use the Instance object instead of the old conductor method.
Unfortunately, the affected method was apparently not tested at all,
so this adds a simple test for it.

Related to blueprint virt-objects-juno

Change-Id: I21ed4903a0c8d98c8776d358d8273077cd979fdf
Make libvirt driver use instance object for updates

This makes the libvirt driver use the Instance object for updates
instead of using the old raw conductor instance_update() method.

Related to blueprint virt-objects-juno

Change-Id: Ic25b2dc21dbc0038699f5fc33dd69334821abfc8
Remove conductor usage from compute.utils.EventReporter

This makes compute.utils.EventReporter use the InstanceActionEvent
object instead of making raw conductor calls. Callers are changed to
stop passing conductor API to it.

In addition, moves helper methods pack_action_event*() from
compute.utils to objects.instance_action like previously was done
with pack_action_[start|finish]().

Related to blueprint compute-manager-objects-juno

Change-Id: I308959a1b206899369a10d391991124ef014c89f
Merge "Make xenapi agent code use Instance object for updates"
Merge "Convert xenapi/vmops uses of instance_update to objects"
Merge "Make vmwareapi/vmops use Instance object for updates"
Merge "Make libvirt driver use instance object for updates"
Merge "Remove conductor usage from compute.utils.EventReporter"
Merge "Fix v3 API extension names for camelcase"