roachtest: deflake splits/load/ycsb/e

[iskettaneh]

This test has a long history of flakes. The main reason is that at the first couple of minutes of the test, there many splits could happen because of the init phase of the workload increases the CPU and it has many inserts. However, for the remainder of the test, the workload is mostly scans, and that shouldn't cause many splits.

This commit increases the maximumRanges allowed by 2. We ~recently increased it to
the current number and saw almost now flakes, so increasing it by 2 should hopefully
be enough.

In the future, if we see many flakes of this nature. I think we should ignore the splits that happen in the first 2 minutes of the test, and focus on the fact that the splits in the remainder of the test are minimal.

Fixes: #149516

Release Note: None

[cockroach-teamcity]

This change is 

[arulajmani]

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! 1 of 0 LGTMs obtained (waiting on @wenyihu6)

[iskettaneh]

TFTR!

bors r+

[craig]

Build succeeded:

• check_generated_code
• linux_amd64_fips_build
• local_roachtest
• lint
• linux_amd64_build
• acceptance
• examples_orms
• docker_image_amd64
• local_roachtest_fips
• unit_tests

[blathers-crl]

Encountered an error creating backports. Some common things that can go wrong:

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error creating merge commit from 5f370be to blathers/backport-release-23.2-149535: POST https://api.github.com/repos/cockroachdb/cockroach/merges: 409 Merge conflict []

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Backport to branch release-23.2 failed. See errors above.

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error creating merge commit from 5f370be to blathers/backport-release-24.1-149535: POST https://api.github.com/repos/cockroachdb/cockroach/merges: 409 Merge conflict []

you may need to manually resolve merge conflicts with the backport tool.

Backport to branch release-24.1 failed. See errors above.

---

💡 Consider backporting to the fork repo instead of the main repo. See instructions for more details.

💡 Consider backporting to the fork repo instead of the main repo. See instructions for more details.

💡 Consider backporting to the fork repo instead of the main repo. See instructions for more details.

💡 Consider backporting to the fork repo instead of the main repo. See instructions for more details.

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