logictest: introduce new configs for experimental distsql planning

[yuzefovich]

This commit adds three new configurations local-exp-planning,
fakedist-exp-planning, and 5node-exp-planning which override
experimental_distsql_planning cluster setting to on. The
corresponding config is included in 5node-defaults list. And once
the new factory is significantly implemented, it will probably make
sense to add the configs to default-configs.

Release note: None

[cockroach-teamcity]

This change is 

[asubiotto]

Reviewed 3 of 3 files at r1.
Reviewable status: complete! 0 of 0 LGTMs obtained (waiting on @yuzefovich)

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pkg/sql/logictest/logic.go, line 482 at r1 (raw file):

	},
	{
		name:                                "local-exp-planning",

exp sounds like expression to me. How about spece.g.local-spec-planning` instead?

---

pkg/sql/logictest/logic.go, line 586 at r1 (raw file):

	},
	{
		name:                                "5node-exp-planning",

What if we add this to the 5node-defaults directive? Is it worth it?

[yuzefovich]

Reviewable status: complete! 0 of 0 LGTMs obtained (waiting on @asubiotto)

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pkg/sql/logictest/logic.go, line 482 at r1 (raw file):

Previously, asubiotto (Alfonso Subiotto Marqués) wrote…

exp sounds like expression to me. How about spece.g.local-spec-planning` instead?

I like this suggestion, done.

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pkg/sql/logictest/logic.go, line 586 at r1 (raw file):

Previously, asubiotto (Alfonso Subiotto Marqués) wrote…

What if we add this to the 5node-defaults directive? Is it worth it?

Hm, at this point not many things are implemented in the new factory, so most of the work will be redundant. However, we use 5node-defaults in about 10 files, so it shouldn't make the test time a lot worse, and it might be nice to have the new config in those files. Done.

[asubiotto]

Reviewed 3 of 3 files at r2.
Reviewable status: complete! 1 of 0 LGTMs obtained

[yuzefovich]

TFTR!

bors r+

[craig]

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[craig]

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