traffic attribution: log SandcastleNonce for edenapi

Summary:
log SandcastleNonce for edenapi

Somehow it was missing and was only being logged for wireproto

https://fburl.com/scuba/mononoke_test_perf/m1yatee0

edenapi is missing:

https://fburl.com/scuba/mononoke_test_perf/6jabiv5y

This is because we need to pick selectively the fields that we log.

It is also logged for LFS, so we should log for edenapi as well.

Reviewed By: clara-9

Differential Revision: D72171873

fbshipit-source-id: 75fb26865c644155ec7fd4affd680d820e44d8e0

Author: Liubov Dmitrieva

eden/mononoke/gotham_ext/src/middleware/scuba.rs

@@ -73,6 +73,8 @@ pub enum HttpScubaKey {
     ClientIdentities,
     /// Alias of the sandcastle job, if any.
     SandcastleAlias,
+    /// Nonce of the sandcastle job, if any.
+    SandcastleNonce,
     /// VCS type of the sandcastle job, if any.
     SandcastleVCS,
     /// A unique ID identifying this request.
@@ -122,6 +124,7 @@ impl AsRef<str> for HttpScubaKey {
             ClientIp => "client_ip",
             ClientIdentities => "client_identities",
             SandcastleAlias => "sandcastle_alias",
+            SandcastleNonce => "sandcastle_nonce",
             SandcastleVCS => "sandcastle_vcs",
             RequestId => "request_id",
             HeadersDurationMs => "headers_duration_ms",
@@ -313,6 +316,9 @@ fn populate_scuba(scuba: &mut MononokeScubaSampleBuilder, state: &mut State) {
         let sandcastle_alias = metadata.sandcastle_alias();
         scuba.add(HttpScubaKey::SandcastleAlias, sandcastle_alias);
 
+        let sandcastle_nonce = metadata.sandcastle_nonce();
+        scuba.add(HttpScubaKey::SandcastleNonce, sandcastle_nonce);
+
         let sandcastle_vcs = metadata.sandcastle_vcs();
         scuba.add(HttpScubaKey::SandcastleVCS, sandcastle_vcs);