dist/debian: don't install systemd unit by install.sh, use debian/*.service

Installing *.service by install.sh script causes the error on installing .deb
package, use debian/*.service instead.

Fixes scylladb/scylla#6010
Related scylladb/scylla#5640
Related 29285b28e2

(cherry picked from commit 2883a8dc63)

dist/debian/debian/scylla-jmx.install

@@ -0,0 +1,4 @@
+etc/default/scylla-jmx
+etc/systemd/system/scylla-jmx.service.d/sysconfdir.conf
+opt/scylladb/jmx/*
+usr/lib/scylla/jmx/*

dist/debian/rules.mustache

@@ -6,7 +6,7 @@ override_dh_auto_clean:
 
 override_dh_auto_install:
 	dh_auto_install
-	./install.sh --root "$(CURDIR)/debian/{{product}}-jmx" --sysconfdir /etc/default
+	./install.sh --root "$(CURDIR)/debian/tmp" --sysconfdir /etc/default
 
 override_dh_installinit:
 {{#scylla}}