test_exec_properties to control test action

[werkt]

If specified for a test action, these properties will be added to the
effective exec_properties for a target, overriding any keys which match
by name, and only being effective for the test's execution, not any
other actions from the rule's context.

Closes #10799

[sdtwigg]

I am unsure about this change.

Regardless, I think you also need to add the attribute to SkylarkRuleClassFunctions.java in order for this to also work in Starlark test rules.

[werkt]

The associated issue should provide some additional explanation for this change. If there's already a way to target only test actions with per target property manipulations, I'm fine with that, but I don't believe there is.

Updated to support starlark test rules.

[gregestren]

Hey @werkt. In the interest of moving this PR forward, I think the right next step is to get an update from @juliexxia, who's implemented a major chunk of the work discussed in #10799.

Let's aim to get her perspective next week, then decide the right way to close this from there.

[meisterT]

What's the state of this PR?

[juliexxia]

It's being replaced by an exec group to create test actions. Waiting on internal PR reviews.

[philwo]

@juliexxia I understand that we can thus close this PR. Please comment and reopen if this is wrong.