Disable flaky Ice/ConnectionTest.* tests.
Disable flaky Ice/ConnectionTest.* tests.

BUG=573366
TBR=sergeyu@chromium.org

Review URL: https://codereview.chromium.org/1559683002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#367237}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk