Revert of Decrease swarming shards for Linux RandomOrder bots from 18 to 6.

Revert of Decrease swarming shards for Linux RandomOrder bots from 18 to 6. (patchset #1 id:1 of https://codereview.chromium.org/2835903002/ )

Reason for revert:
Want to go back to 18 shards to increase likelihood of single shard failure issues.

Original issue's description:
> Decrease swarming shards for Linux RandomOrder bots from 18 to 6.
> 
> Review-Url: https://codereview.chromium.org/2835903002
> Cr-Commit-Position: refs/heads/master@{#466599}
> Committed: https://chromium.googlesource.com/chromium/src/+/e510777b49ba34c52aebc3613552cf2f4acbc2dc

TBR=mcgreevy@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2842973002
Cr-Commit-Position: refs/heads/master@{#467279}
Committed: https://chromium.googlesource.com/chromium/src/+/3f3cea85fc6690f2e1184364e2a0ea50351b91d0

[mithro, 2017-04-26 08:22:32]

The CQ bit was checked by tansell@chromium.org

[mithro, 2017-04-26 08:22:32]

Created Revert of Decrease swarming shards for Linux RandomOrder bots from 18 to
6.

[commit-bot: I haz the power, 2017-04-26 08:22:40]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-26 09:25:25]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493194952486320, "parent_rev":
"c7a4e70db7ce16df575a5158a5ba9a383b88084c", "commit_rev":
"3f3cea85fc6690f2e1184364e2a0ea50351b91d0"}

[commit-bot: I haz the power, 2017-04-26 09:25:40]

Description was changed from

==========
Revert of Decrease swarming shards for Linux RandomOrder bots from 18 to 6.
(patchset #1 id:1 of https://codereview.chromium.org/2835903002/ )

Reason for revert:
Want to go back to 18 shards to increase likelihood of single shard failure
issues.

Original issue's description:
> Decrease swarming shards for Linux RandomOrder bots from 18 to 6.
> 
> Review-Url: https://codereview.chromium.org/2835903002
> Cr-Commit-Position: refs/heads/master@{#466599}
> Committed:
https://chromium.googlesource.com/chromium/src/+/e510777b49ba34c52aebc3613552...

TBR=mcgreevy@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
==========

to

==========
Revert of Decrease swarming shards for Linux RandomOrder bots from 18 to 6.
(patchset #1 id:1 of https://codereview.chromium.org/2835903002/ )

Reason for revert:
Want to go back to 18 shards to increase likelihood of single shard failure
issues.

Original issue's description:
> Decrease swarming shards for Linux RandomOrder bots from 18 to 6.
> 
> Review-Url: https://codereview.chromium.org/2835903002
> Cr-Commit-Position: refs/heads/master@{#466599}
> Committed:
https://chromium.googlesource.com/chromium/src/+/e510777b49ba34c52aebc3613552...

TBR=mcgreevy@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2842973002
Cr-Commit-Position: refs/heads/master@{#467279}
Committed:
https://chromium.googlesource.com/chromium/src/+/3f3cea85fc6690f2e1184364e2a0...
==========

[commit-bot: I haz the power, 2017-04-26 09:25:41]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/3f3cea85fc6690f2e1184364e2a0...