testing: kokoro CI keeps stuck while testing goTest

[hyangah]

Log: https://source.cloud.google.com/results/invocations/5124af33-e616-4065-bb61-2a14bce8a492
From https://go-review.googlesource.com/c/vscode-go/+/358544/3

...
 Go Test Runner

    Profile

      ✔ creates a profile (74ms)

      ✔ tests are run together when not profiling (118ms)

running 8 tests

Kokoro CI stopped. No more log.
And, eventually it will time-out. And the failure is not deterministic in master.

Temporarily disabled the test https://go-review.googlesource.com/c/vscode-go/+/358615/3
in the release branch to unstuck the release process.

[gopherbot]

Change https://golang.org/cl/358615 mentions this issue: test/integration/goTest: skip Profile tests

[gopherbot]

Change https://golang.org/cl/359396 mentions this issue: test/integration/goTest: temporarily disable profile tests

[gopherbot]

Change https://golang.org/cl/382334 mentions this issue: src/goTest: avoid a name conflicting with the proposed quickpick api

[gopherbot]

Change https://golang.org/cl/383219 mentions this issue: [release] src/goTest: avoid a name conflicting with the proposed quickpick api