fbcode_builder: strip fbcode/eden/fs2 from eden/sapling OSS manifests

Summary:
Add `^fbcode/eden/fs2/.*$` to the `[shipit.strip]` section of the `eden` and `sapling` fbcode_builder manifests so the new Eden2 POC directory `fbcode/eden/fs2` is excluded from the internal getdeps OSS builds and the OSS-CI determinator.

This mirrors the authoritative open-source exclusion in configerator D108479762 (the `facebook/sapling` CodeSync `defaultStrippedFiles`), which is what actually prevents `fbcode/eden/fs2` from being published to `github.com/facebook/sapling`. This diff keeps the manifest-driven getdeps path consistent with it. The `mononoke` manifest already excludes `fbcode/eden/fs2` via its `^fbcode/eden(?!/mononoke|/scm/(lib|public_autocargo))/.*$` rule, so it needs no change.

This commit is the bottom of the Eden2 stack; D108475141 (fs2 blueprint.md) depends on it.

Reviewed By: genevievehelsel

Differential Revision: D108481193

fbshipit-source-id: fa73eaf1187f915fe21f89d0aa8d590767c44106

Author: giorgidze

build/fbcode_builder/manifests/eden

@@ -90,6 +90,7 @@ fbcode/configerator/structs/scm/hg/public_autocargo = configerator/structs/scm/h
 ^fbcode/eden/fs/eden-config\.h$
 ^fbcode/eden/fs/py/eden/config\.py$
 ^fbcode/eden/hg-server/.*$
+^fbcode/eden/fs2/.*$
 ^fbcode/eden/mononoke/(?!lfs_protocol)
 ^fbcode/eden/scm/build/.*$
 ^fbcode/eden/scm/lib/third-party/rust/.*/Cargo.toml$

build/fbcode_builder/manifests/sapling

@@ -41,6 +41,7 @@ fbcode/tools/lfs = tools/lfs
 ^fbcode/eden/fs/eden-config\.h$
 ^fbcode/eden/fs/py/eden/config\.py$
 ^fbcode/eden/hg-server/.*$
+^fbcode/eden/fs2/.*$
 ^fbcode/eden/fs(?!/public_autocargo).*/Cargo\.toml$
 ^fbcode/eden/mononoke(?!/public_autocargo).*/Cargo\.toml$
 ^fbcode/eden/scm(?!/public_autocargo|/edenscmnative/bindings).*/Cargo\.toml$