Disable InfluxDB reporting

Make reporting of InfluxDB statistics opt-in rather than opt-out.

Trivial-Fix
Change-Id: I23342f797d883da1fe4c3ecdda53dd677239dc36

ansible/roles/influxdb/templates/influxdb.conf.j2

-reporting-disabled = false
+reporting-disabled = true
 [logging]
   level = "info"
   file = "/var/log/kolla/influxdb/influxdb.log"