Fix editing of systemd files on openSUSE

On openSUSE, we install files under /usr/lib/systemd. As that is
a symlink on Fedora, unconditionally changing the path makes
both work at the same time.

Change-Id: I4c3b843b0a5149f109d7051618038e054438e830
Merge "Fix editing of systemd files on openSUSE"