Add map-services

map-services is used by os-svc-restart from Change-Id:
I15eb2a5db4b0a08e1fb40bda640cd8f224939a92

map-services is not only distro specific, it also needs to be able to
handle different service names for a given distro based on source vs
package installs, since the service names may be different. This is done
via a simple check if the requested service is defined, if it is, we
print the requested name, otherwise, we print the mapped name.

Currently only implemented for Fedora. Support for other distros is
easily implemented just like map-packages.

Change-Id: Ie7b2dcfa7cabd887d5c212df110d90f9d00a7f65
Merge "Add map-services"