Infer rootwrap arguments from project

We can infer the binary and configuration paths just from the project
name and expanding this to the known *_DIR & *_BIN_DIR variables.  A
similar thing is done for policyd settings

Change-Id: I7c6a9fa106948ae5cbcf52555ade6154623798f1
diff --git a/lib/ceilometer b/lib/ceilometer
index 9abdbfe..1f72187 100644
--- a/lib/ceilometer
+++ b/lib/ceilometer
@@ -254,7 +254,7 @@
 
     if is_service_enabled ceilometer-aipmi; then
         # Configure rootwrap for the ipmi agent
-        configure_rootwrap ceilometer $CEILOMETER_BIN_DIR/ceilometer-rootwrap $CEILOMETER_DIR/etc/ceilometer
+        configure_rootwrap ceilometer
     fi
 }
 
diff --git a/lib/cinder b/lib/cinder
index eb0e1d7..3c5425a 100644
--- a/lib/cinder
+++ b/lib/cinder
@@ -190,7 +190,7 @@
 
     rm -f $CINDER_CONF
 
-    configure_rootwrap cinder $CINDER_BIN_DIR/cinder-rootwrap $CINDER_DIR/etc/cinder
+    configure_rootwrap cinder
 
     cp $CINDER_DIR/etc/cinder/api-paste.ini $CINDER_API_PASTE_INI
 
diff --git a/lib/nova b/lib/nova
index 7d2145b..da288d3 100644
--- a/lib/nova
+++ b/lib/nova
@@ -298,7 +298,7 @@
 
     install_default_policy nova
 
-    configure_rootwrap nova $NOVA_BIN_DIR/nova-rootwrap $NOVA_DIR/etc/nova
+    configure_rootwrap nova
 
     if [[ "$ENABLED_SERVICES" =~ "n-api" ]]; then
         # Get the sample configuration file in place