Enable prometheus-exporter

[elfosardo]

Adding packages installation and configuration to enable prometheus-exporter

Also removing explicit install of python-chardet, as dependency it will be installed anyway with the correct python version

[elfosardo]

/retest

[elfosardo]

/retest

[iurygregory]

/approve

[elfosardo]

/retest

[elfosardo]

retest

[elfosardo]

/retest

[elfosardo]

/retest

[elfosardo]

/retest

[elfosardo]

/test images

[elfosardo]

/retest

[elfosardo]

/retest

[hardys]

@elfosardo This doesn't appear to be a cherry-pick from https://github.com/metal3-io/ironic-image ?

If I'm mistaken then we should include the upstream PR or commit reference in this commit message, or else include a justification for why this only makes sense in the forked image?

[hardys]

nvm, I found it - this was added as part of metal3-io#101

In future it would be good to keep the commit naming etc aligned so it's easier to track from the upstream repo.

[hardys]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bfournie, dtantsur, elfosardo, hardys, iurygregory

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[hardys]

@elfosardo FYI this should also have updated Dockerfile as otherwise we have conflicts doing cherry-picks from metal3-io/ironic-image

I'll fix that in a followup