Revert "[CQ] Remove pkg-linux-release from the CQ trybots until it is fixed"
Revert "[CQ] Remove pkg-linux-release from the CQ trybots until it is fixed"

This reverts commit 5eea3942e6191ba048ba89196b2ed7cda749d6b8.

Reason for revert: The problem hasn't happened again since 7/18.

Original change's description:
> [CQ] Remove pkg-linux-release from the CQ trybots until it is fixed
> 
> Change-Id: I17ee0bfc26af1d060fc6f129419239e4a790034a
> Reviewed-on: https://dart-review.googlesource.com/65120
> Reviewed-by: Jonas Termansen <sortie@google.com>

TBR=a821cddceae7dc400f272e3cb1a72f400f9fed6d@google.com,sortie@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: I8efc9e2ce2c935d800b3b295d03e46f8666ba72c
Reviewed-on: https://dart-review.googlesource.com/67360
Reviewed-by: Alexander Thomas <29642742b6693024c89de8232f2e2542cf7eedf7@google.com>
Reviewed-by: William Hesse <a821cddceae7dc400f272e3cb1a72f400f9fed6d@google.com>

dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk