Install oslo.i18n from source

Add a step to install oslo.i18n from source.

Change-Id: Ie041d4b82ca75a1c2ff99563a7a87447adc57ad2
diff --git a/lib/oslo b/lib/oslo
index a0a1f8f..421fbce 100644
--- a/lib/oslo
+++ b/lib/oslo
@@ -23,6 +23,7 @@
 CLIFF_DIR=$DEST/cliff
 OSLOCFG_DIR=$DEST/oslo.config
 OSLODB_DIR=$DEST/oslo.db
+OSLOI18N_DIR=$DEST/oslo.i18n
 OSLOMSG_DIR=$DEST/oslo.messaging
 OSLORWRAP_DIR=$DEST/oslo.rootwrap
 OSLOVMWARE_DIR=$DEST/oslo.vmware
@@ -45,6 +46,9 @@
     git_clone $CLIFF_REPO $CLIFF_DIR $CLIFF_BRANCH
     setup_install $CLIFF_DIR
 
+    git_clone $OSLOI18N_REPO $OSLOI18N_DIR $OSLOI18N_BRANCH
+    setup_install $OSLOI18N_DIR
+
     git_clone $OSLOCFG_REPO $OSLOCFG_DIR $OSLOCFG_BRANCH
     setup_install $OSLOCFG_DIR
 
diff --git a/stackrc b/stackrc
index 3923d38..8aa478f 100644
--- a/stackrc
+++ b/stackrc
@@ -183,6 +183,10 @@
 OSLODB_REPO=${OSLODB_REPO:-${GIT_BASE}/openstack/oslo.db.git}
 OSLODB_BRANCH=${OSLODB_BRANCH:-master}
 
+# oslo.i18n
+OSLOI18N_REPO=${OSLOI18N_REPO:-${GIT_BASE}/openstack/oslo.i18n.git}
+OSLOI18N_BRANCH=${OSLOI18N_BRANCH:-master}
+
 # oslo.messaging
 OSLOMSG_REPO=${OSLOMSG_REPO:-${GIT_BASE}/openstack/oslo.messaging.git}
 OSLOMSG_BRANCH=${OSLOMSG_BRANCH:-master}