packaging: Enable features according to distribution

This change introduces two new "install_systemd" and "install_systemv"
macros that control if the service should be controlled by systemd or by
System V init scripts. These macros are enabled or disabled according to
the type of distribution.

Change-Id: If6b2afe381169943c5fc03f78a6c38bea790dd13
Signed-off-by: Juan Hernandez <juan.hernandez@redhat.com>