install: use origin-v4.0 etcd image

[hexfusion]

We are currently using upstream etcd image which is based on Alpine Linux OS. This PR updates this to the correct origin-v4.0 etcd image build.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1679834

/cc @abhinavdahiya

[kikisdeliveryservice]

/hold

[kikisdeliveryservice]

install/image-references change overlaps with the change being made in #508
cc: @cgwalters

[cgwalters]

install/image-references change overlaps with the change being made in #50

They're separate images though the patches probably will conflict "textually".

[kikisdeliveryservice]

thanks @cgwalters !

/hold cancel

[kikisdeliveryservice]

/test e2e-aws

[cgwalters]

/approve

Just want to double check this is a 4.0 target, but I'm pretty sure it should be.

[derekwaynecarr]

this must be a 4.0 change.

[cgwalters]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cgwalters, hexfusion

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