Fix discrepancies between guestagent sample.conf, and default values in cfg.py

[Nikhil Manchanda]

There are some values that are different between the sample conf, and the defaults in cfg.py.
Fix these to be consistent, so there is a single set of sane defaults.

There are also other values that don't make sense for the guest agent (like bind host, and port).

These need to be cleaned up.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/104062

[Mat Lowery (mat-lowery)]

As we discussed (coincidentally) on IRC, please remove nova_proxy_admin_* from trove-guestagent.conf.sample as well.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/104062
Committed: https://git.openstack.org/cgit/openstack/trove/commit/?id=40244847b64c1a3fee699ec711a9d5a5108ae02c
Submitter: Jenkins
Branch: master

commit 40244847b64c1a3fee699ec711a9d5a5108ae02c
Author: Nikhil Manchanda <email address hidden>
Date: Tue Jul 1 20:37:05 2014 -0700

    Cleaned up sample trove-guestagent.conf

    Cleaned out the trove-guestagent.conf to only contain values that make
    sense for the guest agent. There were also values that were different
    between the sample conf, and the defaults in cfg.py, which were fixed
    to be consistent, so as to have a single set of sane defaults.

    Closes bug: 1336618

    Change-Id: Ib3823856c288971665fa29489c4ffc5b899ccbaf