[roll] Roll infra/recipes [fuchsia_roller] Enable partial clones

Enable partial (blobless) clones for the manifest repository checkout
in the fuchsia_roller recipe. Since manifest repositories (such as
integration.git) contain hundreds of thousands of auto-roller commits,
their full history is extremely large. A cold-cache clone can take
nearly 10 minutes, which introduces significant latency to the system
when it happens on a builder like the fuchsia-roller.

With partial clone enabled, only the commit history and tree structures
are cloned, with file contents (blobs) fetched on-demand. This
significantly speeds up cold-cache checkouts for roller builders.

To support this, a `partial` option is added to the `jiri` and
`checkout` recipe modules, forwarding the `-partial` flag to the
`jiri init` command.

Original-Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/infra/recipes/+/1648776
Original-Original-Revision: 9a8eca0f2feacb51a2356cb90f84cf485640cc3c
GitOrigin-RevId: 5476feb18c39a88a1ae439fedfd84eb8bf1a181b
Change-Id: I7ad8a5e345f3dcd00344bb90de3e5be85fdc0e58
Reviewed-on: https://fuchsia-review.googlesource.com/c/integration/+/1648758
Cr-Commit-Position: refs/heads/main@{#194537}