Expose additional builder booster related flags in the vc (#5086)

* expose builder booster flags in vc, enable options in validator endpoints, update tests

* resolve failing test

* fix issues related to CreateConfig and MoveConfig

* remove unneeded val, change how boost factor flag logic in the vc, add some additional documentation

* fix typos

* fix typos

* assume builder-proosals flag if one of other two vc builder flags are present

* fmt

* typo

* typo

* Fix CLI help text

* Prioritise per validator builder boost configurations over CLI flags.

* Add http test for builder boost factor with process defaults.

* Fix issue with PATCH request

* Add prefer builder proposals

* Add more builder boost factor tests.

---------

Co-authored-by: Mac L <mjladson@pm.me>
Co-authored-by: Jimmy Chen <jchen.tc@gmail.com>
Co-authored-by: Paul Hauner <paul@paulhauner.com>

validator_manager/src/common.rs

@@ -46,6 +46,8 @@ pub struct ValidatorSpecification {
     pub fee_recipient: Option<Address>,
     pub gas_limit: Option<u64>,
     pub builder_proposals: Option<bool>,
+    pub builder_boost_factor: Option<u64>,
+    pub prefer_builder_proposals: Option<bool>,
     pub enabled: Option<bool>,
 }
 
@@ -64,6 +66,8 @@ impl ValidatorSpecification {
             gas_limit,
             builder_proposals,
             enabled,
+            builder_boost_factor,
+            prefer_builder_proposals,
         } = self;
 
         let voting_public_key = voting_keystore
@@ -136,6 +140,8 @@ impl ValidatorSpecification {
                     enabled,
                     gas_limit,
                     builder_proposals,
+                    builder_boost_factor,
+                    prefer_builder_proposals,
                     None, // Grafitti field is not maintained between validator moves.
                 )
                 .await