Install collectd_ceilometer module during deployment

pip_install collectd_ceilometer module
- Install libvirt-* requirements from the package manager so pip can build

This ensures is actually installed from teh requirements.txt file, in
relation to the related bug.

Change-Id: Iba26b1da863288e789f68646dee6a7f62fd6c160
Partial-Bug: #1644254

devstack/libs/collectd

@@ -17,7 +17,16 @@ function stop_collectd {
     fi
 }
 
-# install collectd service
+function install_requirements {
+    echo "Installing pre-resquisites"
+    if is_ubuntu; then
+        install_package libvirt-bin libvirt-dev python-libvirt
+    elif is_fedora; then
+        install_package libvirt libvirt-devel libvirt-python
+    fi
+}
+
+# install collectd
 function install_collectd {
     if [[ "$COLLECTD_INSTALL" == True  ]]; then
         if is_fedora || is_ubuntu; then

devstack/plugin.sh

@@ -8,10 +8,10 @@ set -o xtrace
         "stack")
             case $2 in
                 "pre-install")
-                    # no-op
-                    :
+                    install_requirements
                 ;;
                 "install")
+                    pip_install $COLLECTD_CEILOMETER_DIR
                     # install system package
                     install_collectd
                     # adapt collectd.conf