Description of problem:
For some reason the collectd.cpu.percent field is transformed to collectd.CPU.percent.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Field name is collectd.CPU.percent.
Field name should be collectd.cpu.percent
Could you please provide more information and why do you expect small case 'cpu'? Is it possible it is desired to have 'CPU' in capital letters? Because it looks like the field is expected to be 'CPU' based on these references: index pattern , elasticsearch index templates , convention of how CPU plugin for collectd is named 
There was a mistake in the elasticsearch-templates namespace.
Fixed the issue in https://github.com/ViaQ/elasticsearch-templates/commit/4e952bd9f4a500321d68da8abf5a9211c632a3d3
3.7 - fix is in version 3.7.7 or later
3.6 - fix is in v126.96.36.199.65 or later
@Lukas, I guess this bug is in RHV too. Help us verify it. Thanks
Could you help check if this bug could be verified?
verified in openshift-ansible-188.8.131.52.75-1.git.0.0a44128.el7.noarch
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.