[release-4.13] ETCD-403: Revert user configuration for etcd and change default max quota

[openshift-cherrypick-robot]

This is an automated cherry-pick of #1506

/assign dhellmann

[openshift-ci-robot]

@openshift-cherrypick-robot: An error was encountered cloning bug for cherrypick for bug ETCD-403 on the Jira server at https://issues.redhat.com/. No known errors were detected, please see the full error message for details.

Full error message.

request failed. Please analyze the request body for more details. Status code: 400: {"errorMessages":["Number value expected as the Sprint id."],"errors":{"customfield_12318341":"Operation value must be a string"}}

Please contact an administrator to resolve this issue, then request a bug refresh with /jira refresh.

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In response to this:

This is an automated cherry-pick of #1506

/assign dhellmann

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[dhellmann]

/lgtm
/label backport-risk-assessed

/cc @ShaunaDiaz @dusk125 we should capture the doc impact of this change, too.

[dhellmann]

I filed OSDOCS-5675 for the doc update

[dhellmann]

/jira refresh

[openshift-ci-robot]

@dhellmann: This pull request references ETCD-403 which is a valid jira issue.

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In response to this:

/jira refresh

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[ggiguash]

/label bugzilla/valid-bug

[jogeo]

@geliu2016 FYI this change is landing in 4.13

[geliu2016]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dhellmann, geliu2016, openshift-cherrypick-robot

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[jogeo]

/label cherry-pick-approved

[openshift-ci]

@openshift-cherrypick-robot: all tests passed!

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