Run functorch tests in default shards; delete functorch-specific shards (#96464)
Fixes #96347
This PR:
- Makes the functorch tests run as a part of the "default" shards
- Delete the functorch CI shard from all CI job configurations (if it exists)
- Increase the "default" shard count by 1 for each job, unless it was
previously set to 1, to accommodate the new functorch tests and not
regress time-to-signal.
- Adds a bunch of skips for ROCM and torchdynamo configurations. We can
investigate them later.
NB: I might go through some more iterations to figure out what other
skips need to be added, but this iteration of the PR seems to pass most CI.
suite.
Test Plan:
- wait for CI
Pull Request resolved: https://github.com/pytorch/pytorch/pull/96464
Approved by: https://github.com/huydhn
