cmake: build edenfsctl Rust

Summary: This diff adds the Rust edenfsctl to our open source build.

Reviewed By: xavierd

Differential Revision: D30788685

fbshipit-source-id: 603caa933ecfc5af0ede7e22f6c7911462da3a65

build/fbcode_builder/manifests/eden

@@ -43,7 +43,7 @@ osxfuse
 libcurl
 
 [shipit.pathmap]
-fbcode/common/rust/shed/hostcaps = common/rust/shed/hostcaps
+fbcode/common/rust/shed = common/rust/shed
 fbcode/eden/oss = .
 fbcode/eden = eden
 fbcode/tools/lfs = tools/lfs