Run linux_job_v2 workflow called by ROCm job only on cron schedule and when push to main

[akashveramd]

In this PR, added the condition in linux_job_v2.yml to run workflow called by ROCm job only on cron schedule and when push to main. This feature is optional and shouldn't affect other workflows. The calling ROCm workflow must set the input 'check-run-condition' to true for using this condition.
This effort is to limit the PR runs on ROCm runner due to limited CI resources and is part of torchtitan PR pytorch/torchtitan#2018

[vercel]

@akashveramd is attempting to deploy a commit to the Meta Open Source Team on Vercel.

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[akashveramd]

@huydhn @malfet: Can I please get a review for this PR?

[seemethere]

No, I don't want to add a rocm specific conditional to the generic job

[akashveramd]

No, I don't want to add a rocm specific conditional to the generic job

I see. However, I think we already have rocm specific conditionals https://github.com/pytorch/test-infra/blob/main/.github/workflows/linux_job_v2.yml#L169 in the existing file?

[seemethere]

No, I don't want to add a rocm specific conditional to the generic job

I see. However, I think we already have rocm specific conditionals main/.github/workflows/linux_job_v2.yml#L169 in the existing file?

That conditional makes sense, the one you are introducing unfortunately does not.

If you want this conditional make it upstream in the torchtitan repository.