Include SAVANNA_CONF_DIR into SAVANNA_CONF_FILE

It's the commom way of using X_CONF_FILE variable.

Change-Id: Ibc284be44ffdd25be3191913c78424cbf06b2bb0
diff --git a/lib/savanna b/lib/savanna
index c7d59f7..de20443 100644
--- a/lib/savanna
+++ b/lib/savanna
@@ -26,7 +26,7 @@
 # Set up default directories
 SAVANNA_DIR=$DEST/savanna
 SAVANNA_CONF_DIR=${SAVANNA_CONF_DIR:-/etc/savanna}
-SAVANNA_CONF_FILE=savanna.conf
+SAVANNA_CONF_FILE=${SAVANNA_CONF_DIR}/savanna.conf
 SAVANNA_DEBUG=${SAVANNA_DEBUG:-True}
 
 SAVANNA_SERVICE_HOST=${SAVANNA_SERVICE_HOST:-$SERVICE_HOST}
@@ -88,24 +88,24 @@
     sudo chown $STACK_USER $SAVANNA_CONF_DIR
 
     # Copy over savanna configuration file and configure common parameters.
-    cp $SAVANNA_DIR/etc/savanna/savanna.conf.sample $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE
+    cp $SAVANNA_DIR/etc/savanna/savanna.conf.sample $SAVANNA_CONF_FILE
 
-    iniset $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE DEFAULT os_admin_password $SERVICE_PASSWORD
-    iniset $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE DEFAULT os_admin_username savanna
-    iniset $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE DEFAULT os_admin_tenant_name $SERVICE_TENANT_NAME
-    iniset $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE DEFAULT debug $SAVANNA_DEBUG
+    iniset $SAVANNA_CONF_FILE DEFAULT os_admin_password $SERVICE_PASSWORD
+    iniset $SAVANNA_CONF_FILE DEFAULT os_admin_username savanna
+    iniset $SAVANNA_CONF_FILE DEFAULT os_admin_tenant_name $SERVICE_TENANT_NAME
+    iniset $SAVANNA_CONF_FILE DEFAULT debug $SAVANNA_DEBUG
 
-    iniset $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE database connection `database_connection_url savanna`
+    iniset $SAVANNA_CONF_FILE database connection `database_connection_url savanna`
 
     if is_service_enabled neutron; then
-        iniset $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE DEFAULT use_neutron true
-        iniset $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE DEFAULT use_floating_ips true
+        iniset $SAVANNA_CONF_FILE DEFAULT use_neutron true
+        iniset $SAVANNA_CONF_FILE DEFAULT use_floating_ips true
     fi
 
-    iniset $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE DEFAULT use_syslog $SYSLOG
+    iniset $SAVANNA_CONF_FILE DEFAULT use_syslog $SYSLOG
 
     recreate_database savanna utf8
-    $SAVANNA_BIN_DIR/savanna-db-manage --config-file $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE upgrade head
+    $SAVANNA_BIN_DIR/savanna-db-manage --config-file $SAVANNA_CONF_FILE upgrade head
 }
 
 # install_savanna() - Collect source and prepare
@@ -116,7 +116,7 @@
 
 # start_savanna() - Start running processes, including screen
 function start_savanna() {
-    screen_it savanna "cd $SAVANNA_DIR && $SAVANNA_BIN_DIR/savanna-api --config-file $SAVANNA_CONF_DIR/$SAVANNA_CONF_FILE"
+    screen_it savanna "cd $SAVANNA_DIR && $SAVANNA_BIN_DIR/savanna-api --config-file $SAVANNA_CONF_FILE"
 }
 
 # stop_savanna() - Stop running processes