Revert of Remove android_rel from CQ since all of its machines are offline. (patchset #1 id:1 of https://codereview.webrtc.org/1459083002/ )
Revert of Remove android_rel from CQ since all of its machines are offline. (patchset #1 id:1 of https://codereview.webrtc.org/1459083002/ )

Reason for revert:
Two of the machines are back. They were offline due to extended maintenance work needed.

Original issue's description:
> Remove android_rel from CQ since all of its machines are offline.
>
> BUG=558213
> TBR=phoglund@webrtc.org
>
> Committed: https://crrev.com/392d0c2701ef0112035e496cafcd2e7f0453547f
> Cr-Commit-Position: refs/heads/master@{#10704}

TBR=phoglund@webrtc.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=558213

Review URL: https://codereview.webrtc.org/1454883004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#10705}

ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc