[compute] if images_type is lvm, there's no way to set libvirt_lvm_snapshot_size

[Stephan Renatus]

When introducing the possibility to change the libvirt_images_type, the following option was forgotten (by the bug reporter).

```
# The amount of storage (in megabytes) to allocate for LVM
# snapshot copy-on-write blocks. (integer value)
#libvirt_lvm_snapshot_size=1000
```

https://github.com/openstack/nova/blob/stable/havana/etc/nova/nova.conf.sample#L2079-L2081

[Stephan Renatus (s-renatus)]

I will propose a change to stable/havana in a minute, but this should probably also be fixed in this process: https://bugs.launchpad.net/openstack-chef/+bug/1266456

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/havana
Review: https://review.openstack.org/86362

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/86362
Committed: https://git.openstack.org/cgit/stackforge/cookbook-openstack-compute/commit/?id=e4064623b032f44284918f4ab5e892431b31b49d
Submitter: Jenkins
Branch: stable/havana

commit e4064623b032f44284918f4ab5e892431b31b49d
Author: Stephan Renatus <email address hidden>
Date: Wed Apr 9 17:06:13 2014 +0200

    Allow configuring lvm_snapshot_size for lvm images_type

    This change allows changing the value used in `lvcreate` when
    snapshotting an instance (`nova image-create`).

    Change-Id: I39c4e781eaa08dcf686e40391a9ab15285743a58
    Closes-Bug: #1305120

[Stephan Renatus (s-renatus)]

The master branch is not affected by this, since [the way snapshots are created has changed|https://github.com/openstack/nova/blob/stable/icehouse/nova/virt/libvirt/imagebackend.py#L452-L491].

Hence I'll close the bug.