Integration: add proxy test for all platforms

[jsliacan]

User mode on all platforms. System mode on linux is used for the e2e proxy test (dedicated to linux). So here we complement that.

[anjannath]

/test integration-crc

[anjannath]

tests are passing locally:

⠀ ➜  crc git:(74b64c8a) make BUNDLE_PATH=/home/anjan/Downloads/bundles/crc_libvirt_4.13.0_amd64.crcbundle PULL_SECRET_PATH=/home/anjan/Downloads/pull-secret GINKGO_OPTS="--ginkgo.label-filter \"goproxy\"" integration
=== RUN   TestTest
Running Suite: Test Suite - /home/anjan/Work/github.com/code-ready/crc/test/integration
=======================================================================================
Random Seed: 1685519925

Will run 6 of 36 specs
•••••[sudo] password for anjan:
•SSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

Ran 6 of 36 Specs in 1300.045 seconds
SUCCESS! -- 6 Passed | 0 Failed | 0 Pending | 30 Skipped
--- PASS: TestTest (1300.05s)
PASS
ok      github.com/crc-org/crc/test/integration 1300.080s

[gbraad]

👍

[gbraad]

lets have this merged soon

[openshift-ci]

@jsliacan: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-crc	77e70f1	link	true	/test e2e-crc

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: anjannath, gbraad

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