v1.17: validator: include waited_for_supermajority in startup metric (backport of #35137) (#35276)

* validator: include waited_for_supermajority in startup metric (#35137)

(cherry picked from commit b0134ab)

# Conflicts:
#	core/src/validator.rs

* fix conflicts

---------

Co-authored-by: Ashwin Sekar <[email protected]>

Author: mergify[bot]

core/src/validator.rs

@@ -1328,6 +1328,8 @@ impl Validator {
             ("id", id.to_string(), String),
             ("version", solana_version::version!(), String),
             ("cluster_type", cluster_type as u32, i64),
+            ("waited_for_supermajority", waited_for_supermajority, bool),
+            ("expected_shred_version", config.expected_shred_version, Option<i64>),
         );
 
         *start_progress.write().unwrap() = ValidatorStartProgress::Running;