updating rackspace-monitoring-agent api call

This adds a method from an RPC call to allow a monitoring agent to be update
to the latest version. This is a trivial change that just issues an
'apt-get install rackspace-monitoring-agent' to install the latest version.
Merge pull request #5 from cp16net/update-monitoring-agent-api-call

updating rackspace-monitoring-agent api call
Adds ResilientSender class and Conductor driver

Corrects spelling of "Resilent" to "Resilient" where applicable.
Guest Agent now uses Conductor to update status, instead of db connection.
Instead of backup_id, backup_info is passed to agent.
send_to_conductor will send a message to conductor on the host.
With this commit the host database requirement is not yet removed.
Merge pull request #6 from ed-/choochoo2

Adds ResilientSender class and Conductor driver
Reinsert try / catch around RPC run_method.
Merge pull request #7 from TimSimpsonR/reinsert-try-catch

Reinsert try / catch around RPC run_method.
Revert "Adds ResilientSender class and Conductor driver"

This reverts commit 6ef3249aa805fe16b726b1f21c90e054e9f95f66.
One of the functional tests does not compile due to this commit
which is affecting CI.
Merge pull request #9 from TimSimpsonR/revert-c

Revert "Adds ResilientSender class and Conductor driver"
Initial Unmount/Mount/ResizeFS
fstab refactoring
Change back fstab file