Service assurance plugins and write_prometheus

This enables to send metrics and events to AMQP 1.0.
write_prometheus provides an exporter to be scraped by
prometheus.

This also moves turbostat to x86 plugins

Change-Id: Ibd3bc04f3cedbcf3e029579877f60e90eb7081e1
(cherry picked from commit 706b70d)
(cherry picked from commit 9bde747)
(cherry picked from commit 31a7792)
(cherry picked from commit 3f8db42)

docker/collectd/Dockerfile.j2

@@ -13,15 +13,22 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 
 {% if base_distro in ['centos', 'oraclelinux', 'rhel'] %}
   {% set collectd_packages = collectd_packages + [
+      'collectd-amqp1',
       'collectd-apache',
       'collectd-ceph',
+      'collectd-connectivity',
       'collectd-disk',
       'collectd-ipmi',
+      'collectd-mysql',
       'collectd-netlink',
       'collectd-ovs-events',
       'collectd-ovs-stats',
+      'collectd-ping',
+      'collectd-procevent',
       'collectd-python',
       'collectd-smart',
+      'collectd-snmp-agent',
+      'collectd-sysevent',
       'collectd-utils',
       'collectd-virt',
       'collectd-write_kafka',