Add cliff, pycadf, stevedore, & taskflow from oslo

Oslo has adopted 4 libraries that were previously on
stackforge, so we can now install them from source.

Change-Id: I6b6e20a7884b47ade466fc38641a5ac1a5f3e146
diff --git a/lib/oslo b/lib/oslo
index f644ed7..b089842 100644
--- a/lib/oslo
+++ b/lib/oslo
@@ -20,9 +20,13 @@
 
 # Defaults
 # --------
+CLIFF_DIR=$DEST/cliff
 OSLOCFG_DIR=$DEST/oslo.config
 OSLOMSG_DIR=$DEST/oslo.messaging
 OSLORWRAP_DIR=$DEST/oslo.rootwrap
+PYCADF_DIR=$DEST/pycadf
+STEVEDORE_DIR=$DEST/stevedore
+TASKFLOW_DIR=$DEST/taskflow
 
 # Entry Points
 # ------------
@@ -33,6 +37,9 @@
     # for a smoother transition of existing users.
     cleanup_oslo
 
+    git_clone $CLIFF_REPO $CLIFF_DIR $CLIFF_BRANCH
+    setup_develop $CLIFF_DIR
+
     git_clone $OSLOCFG_REPO $OSLOCFG_DIR $OSLOCFG_BRANCH
     setup_develop $OSLOCFG_DIR
 
@@ -41,6 +48,15 @@
 
     git_clone $OSLORWRAP_REPO $OSLORWRAP_DIR $OSLORWRAP_BRANCH
     setup_develop $OSLORWRAP_DIR
+
+    git_clone $PYCADF_REPO $PYCADF_DIR $PYCADF_BRANCH
+    setup_develop $PYCADF_DIR
+
+    git_clone $STEVEDORE_REPO $STEVEDORE_DIR $STEVEDORE_BRANCH
+    setup_develop $STEVEDORE_DIR
+
+    git_clone $TASKFLOW_REPO $TASKFLOW_DIR $TASKFLOW_BRANCH
+    setup_develop $TASKFLOW_DIR
 }
 
 # cleanup_oslo() - purge possibly old versions of oslo