roachtest: run sequelize on insecure mode and default sql port

[DarrylWong]

The test suite expects insecure connections and that the SQL
port is on 26257.

Fixes: none
Release note: none
Epic: none

[cockroach-teamcity]

This change is 

[DarrylWong]

The suite does attempt to read in env.COCKROACH_PORT, but I wasn't able to get it to work. Seemed to still hardcode 26257 in some places. Since this test still seems WIP having it run at all seems like a better option for now over messing with the test suite adapter but let me know.

[annrpom]

(ran this a few times on my gceworker) lgtm -- ty!

[DarrylWong]

TFTR!

bors r=annrpom

[craig]

Build succeeded:

• linux_arm64_build
• windows_build
• examples_orms
• local_roachtest
• local_roachtest_fips
• lint
• linux_amd64_build
• check_generated_code
• macos_arm64_build
• docker_image_amd64
• unit_tests
• macos_amd64_build
• acceptance
• linux_amd64_fips_build

[blathers-crl]

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

1. The backport branch might have already existed.
2. There was a merge conflict.
3. The backport branch contained merge commits.

You might need to create your backport manually using the backport tool.

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error creating merge commit from 15a2dbb to blathers/backport-release-23.1-124053: 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 23.1.x failed. See errors above.

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