controller/registry: implement content extraction for catalog sources

[stevekuznetsov]

go.mod: update the api dependency

Signed-off-by: Steve Kuznetsov skuznets@redhat.com

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controller/registry: implement content extraction for catalog sources

Signed-off-by: Steve Kuznetsov skuznets@redhat.com

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Implements #3019

[stevekuznetsov]

@joelanford made the changes you suggested. I've used this approach often in the past and found it useful, but only with statically-compiled binaries under my own control. If anything in sh or cp is dynamically linked, this won't work and we will be needing to write a Go program. Not hard, but just something to keep in mind.

[stevekuznetsov]

@joelanford unfortunately the specific SHAs for this image are not kept around for very long, as there are no long-lived tags. We will have to suffice with :latest, which might break tests if they are asserting on specifics.

[joelanford]

Seems fine for now. It'd be nice if we did the thing we are now doing in catalogd and operator-controller where we have all of our test artifacts actually come out of the repo.

Definitely not a blocker for this though, IMO.

[joelanford]

/approve

[openshift-ci]

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[grokspawn]

/lgtm