debian: Move rootston.ini out of examples

We're using it from the systemd unit

debian/phosh.dirs

+/usr/lib/phosh
+/usr/share/phosh

debian/rules

@@ -8,8 +8,8 @@ export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 override_dh_auto_install:
 	dh_auto_install
 	# Move phosh to arch indep dir
-	mkdir -p debian/phosh/usr/lib/phosh
 	mv debian/phosh/usr/lib/*/phosh debian/phosh/usr/lib/phosh/phosh
+	cp rootston.ini debian/phosh/usr/share/phosh/
 
 override_dh_installsystemd:
 	dh_installsystemd --no-start --no-enable