mononoke: make some derived data mapping types comparable

Summary:
It makes it a bit hard to do experiments and compare derivation results.
It's easy to compare these types, so let's do it.

Reviewed By: mitrandir77

Differential Revision: D31017823

fbshipit-source-id: 6173bba53c7ee254198e023dde57564fe9c3efed

eden/mononoke/derived_data/blame/mapping_v1.rs

@@ -22,7 +22,7 @@ use unodes::RootUnodeManifestId;
 use crate::derive_v1::derive_blame_v1;
 use crate::{BlameDeriveOptions, DEFAULT_BLAME_FILESIZE_LIMIT};
 
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct BlameRoot(ChangesetId);
 
 impl From<ChangesetId> for BlameRoot {

eden/mononoke/derived_data/blame/mapping_v2.rs

@@ -26,7 +26,7 @@ use crate::batch_v2::derive_blame_v2_in_batch;
 use crate::derive_v2::derive_blame_v2;
 use crate::{BlameDeriveOptions, DEFAULT_BLAME_FILESIZE_LIMIT};
 
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct RootBlameV2 {
     csid: ChangesetId,
     root_manifest: RootUnodeManifestId,

eden/mononoke/derived_data/fastlog/mapping.rs

@@ -44,7 +44,7 @@ pub enum ErrorKind {
     DeserializationError(String, String),
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq, Eq)]
 pub struct RootFastlog(ChangesetId);
 
 impl From<ChangesetId> for RootFastlog {