JENKINS-8641: Added a logrotate definition to the Debian/Ubuntu package.

debian/debian/jenkins.logrotate

+/var/log/jenkins/jenkins.log {
+        weekly
+        copytruncate
+        missingok
+        rotate 52
+        compress
+        delaycompress
+        notifempty
+}

debian/debian/rules

@@ -64,7 +64,7 @@ binary-arch: build install
 	dh_installexamples
 #	dh_installmenu
 #	dh_installdebconf	
-#	dh_installlogrotate
+	dh_installlogrotate
 #	dh_installemacsen
 #	dh_installpam
 #	dh_installmime