Add $PREFIX to server configuration files

Since it is possible for zuul to be installed into a virtualenv, we
need to expose the ability for a user to update the prefix for
services.

Change-Id: Ifb7e174a5ed338ed3d299e7e8a5deabd01b2f429
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

files/etc/default/zuul-launcher

@@ -1,3 +1,7 @@
 # This file is generated by Ansible
 #  DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
 #
+
+# The prefix used when zuul-launcher was installed. Be sure to update this value
+# if you are using a virtualenv.
+PREFIX=/usr

files/etc/default/zuul-merger

@@ -1,3 +1,7 @@
 # This file is generated by Ansible
 #  DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
 #
+
+# The prefix used when zuul-merger was installed. Be sure to update this value
+# if you are using a virtualenv.
+PREFIX=/usr

files/etc/default/zuul-server

@@ -1,3 +1,7 @@
 # This file is generated by Ansible
 #  DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
 #
+
+# The prefix used when zuul-server was installed. Be sure to update this value
+# if you are using a virtualenv.
+PREFIX=/usr

files/etc/init.d/zuul-launcher

@@ -15,17 +15,18 @@
 PATH=/sbin:/usr/sbin:/bin:/usr/bin
 DESC="Zuul Launcher"
 NAME=zuul-launcher
-DAEMON=/usr/local/bin/zuul-launcher
 PIDFILE=/var/run/$NAME/$NAME.pid
 SCRIPTNAME=/etc/init.d/$NAME
 USER=zuul
 
-# Exit if the package is not installed
-[ -x "$DAEMON" ] || exit 0
-
 # Read configuration variable file if it is present
 [ -r /etc/default/$NAME ] && . /etc/default/$NAME
 
+DAEMON=$PREFIX/bin/zuul-launcher
+
+# Exit if the package is not installed
+[ -x "$DAEMON" ] || exit 0
+
 # Load the VERBOSE setting and other rcS variables
 . /lib/init/vars.sh
 

files/etc/init.d/zuul-merger

@@ -15,17 +15,18 @@
 PATH=/sbin:/usr/sbin:/bin:/usr/bin
 DESC="Zuul Merger"
 NAME=zuul-merger
-DAEMON=/usr/local/bin/zuul-merger
 PIDFILE=/var/run/$NAME/$NAME.pid
 SCRIPTNAME=/etc/init.d/$NAME
 USER=zuul
 
-# Exit if the package is not installed
-[ -x "$DAEMON" ] || exit 0
-
 # Read configuration variable file if it is present
 [ -r /etc/default/$NAME ] && . /etc/default/$NAME
 
+DAEMON=$PREFIX/bin/zuul-merger
+
+# Exit if the package is not installed
+[ -x "$DAEMON" ] || exit 0
+
 # Load the VERBOSE setting and other rcS variables
 . /lib/init/vars.sh
 

files/etc/init.d/zuul-server

@@ -13,17 +13,18 @@
 PATH=/sbin:/usr/sbin:/bin:/usr/bin
 DESC="Zuul"
 NAME=zuul-server
-DAEMON=/usr/local/bin/zuul-server
 PIDFILE=/var/run/$NAME/$NAME.pid
 SCRIPTNAME=/etc/init.d/$NAME
 USER=zuul
 
-# Exit if the package is not installed
-[ -x "$DAEMON" ] || exit 0
-
 # Read configuration variable file if it is present
 [ -r /etc/default/$NAME ] && . /etc/default/$NAME
 
+DAEMON=$PREFIX/bin/zuul-server
+
+# Exit if the package is not installed
+[ -x "$DAEMON" ] || exit 0
+
 # Load the VERBOSE setting and other rcS variables
 . /lib/init/vars.sh
 

files/etc/sysconfig/zuul-launcher

@@ -1,3 +1,7 @@
 # This file is generated by Ansible
 #  DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
 #
+
+# The prefix used when zuul-launcher was installed. Be sure to update this value
+# if you are using a virtualenv.
+PREFIX=/usr

files/etc/sysconfig/zuul-merger

@@ -1,3 +1,7 @@
 # This file is generated by Ansible
 #  DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
 #
+
+# The prefix used when zuul-merger was installed. Be sure to update this value
+# if you are using a virtualenv.
+PREFIX=/usr

files/etc/sysconfig/zuul-server

@@ -1,3 +1,7 @@
 # This file is generated by Ansible
 #  DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
 #
+
+# The prefix used when zuul-server was installed. Be sure to update this value
+# if you are using a virtualenv.
+PREFIX=/usr

files/etc/systemd/system/zuul-launcher.service

@@ -7,7 +7,7 @@ Type=simple
 User=zuul
 Group=zuul
 EnvironmentFile=-/etc/sysconfig/zuul-launcher
-ExecStart=/usr/bin/zuul-launcher -d
+ExecStart=/bin/sh -c "${PREFIX}/bin/zuul-launcher -d"
 
 [Install]
 WantedBy=multi-user.target

files/etc/systemd/system/zuul-merger.service

@@ -7,7 +7,7 @@ Type=simple
 User=zuul
 Group=zuul
 EnvironmentFile=-/etc/sysconfig/zuul-merger
-ExecStart=/usr/bin/zuul-merger -d
+ExecStart=/bin/sh -c "${PREFIX}/bin/zuul-merger -d"
 
 [Install]
 WantedBy=multi-user.target

files/etc/systemd/system/zuul-server.service

@@ -7,7 +7,7 @@ Type=simple
 User=zuul
 Group=zuul
 EnvironmentFile=-/etc/sysconfig/zuul-server
-ExecStart=/usr/bin/zuul-server -d
+ExecStart=/bin/sh -c "${PREFIX}/bin/zuul-server -d"
 ExecReload=/bin/kill -HUP $MAINPID
 
 [Install]