Declare xenstore utils dependency (#966)
Declare xenstore utils dependency (#966)

* Declare dependency on xenstore-utils (needed for Ubuntu 18.04)

* Revert "Declare dependency on xenstore-utils (needed for Ubuntu 18.04)"

This reverts commit 26c03a6

* Declare dependency on xenstore-utils (needed for Ubuntu 18.04)

virgo-agent-toolkit/rackspace-monitoring-agent,virgo-agent-toolkit/rackspace-monitoring-agent