Add Intel RDT plugin to collectd container

The intel_rdt plugin collects information provided by monitoring
features of Intel Resource Director Technology (Intel(R) RDT) like
Cache Monitoring Technology (CMT), Memory Bandwidth Monitoring (MBM).
These features provide information about utilization of shared resources.

Change-Id: Ia7c9badd6c93ad0de565442ccd9fbf8561003c9f

docker/collectd/Dockerfile.j2

@@ -25,8 +25,9 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
   {% if base_arch =='x86_64' %}
       {% set collectd_packages = collectd_packages + [
-        'collectd-turbostat',
-        'collectd-hugepages'
+        'collectd-hugepages',
+        'collectd-rdt',
+        'collectd-turbostat'
       ] %}
 
   {% endif %}