Update Registry .ci Scripts for CI Operator

[Jdubrick]

Which area is this issue related to?

/area ci
/area registry

Issue Description

The devfile index is now supported for multiple architectures. As part of our plan to move our workloads on openshift ci to arm64 nodes the .ci/openshift_integration.sh script as part of devfile/registry will need to be altered so it does not hardcode amd64 dependencies. The fix for that can follow what was done in other scripts with an optional argument being passed alongside the script. Additionally, the commands setup in ci-operator for the registry tests will also need to be changed to support aarch64 instead of x86_64.

Acceptance Criteria

Step 1:

• .ci/openshift_integration.sh script altered to allow for amd64 or arm64

Step 2 (Depends on step 1):

• ci-operator commands changed to accommodate the changs to the above script

[Jdubrick]

Currently talking with the ocp team about making our workloads work with arm. Currently there may be a limitation on their end about us building the arm64 image ephemerally and sending it in the payload which I believe would affect how our entire ci-operator is setup if that had to change. I'll leave updates here as I receive them.

[Jdubrick]

WIP PR opened for their workloads configs here: openshift/release#52962

[Jdubrick]

Marking as blocked as ocp team is looking into if we are able to do what we need with arm64 through the ci operator. Currently they have "support" for arm64 through a workaround but are unsure if they have support for building arm64 images on the fly which is what we need for our PR checks.

[Jdubrick]

Blocked by: https://issues.redhat.com/browse/DPTP-4054

[Jdubrick]

Moving to backlog - Been in waiting for a while and no updates on blocking issue