This PS moves elasticsearch to use the endpoints section and
lookups to set the port it serves on.
Change-Id: I4a73893124b6d988cd1f885cfc3dd62abeb4ae8c
This adds a chart for an elasticsearch exporter to expose metrics
for prometheus. This also moves the exporter to be included as
part of the chart it's meant to target as opposed to its own
separate chart
Change-Id: I491f4d1efba633827d8a6255218daeb9d427f922