As Fedora will be enabling waagent.service by preset, set a
conditional trigger to start only under Microsoft hypervisors.
Currently, init/redhat/py2/waagent.service is the packaged
systemd service unit, but patch other potentially applicable
ones as well. This will be cleaned up in the near future
when Fedora support is upstreamed to WALinuxAgent.
Signed-off-by: Chris Patterson <cpatterson@microsoft.com>
