Use E for EthSpec globally (#5264)

* Use `E` for `EthSpec` globally

* Fix tests

* Merge branch 'unstable' into e-ethspec

* Merge branch 'unstable' into e-ethspec

# Conflicts:
#	beacon_node/execution_layer/src/engine_api.rs
#	beacon_node/execution_layer/src/engine_api/http.rs
#	beacon_node/execution_layer/src/engine_api/json_structures.rs
#	beacon_node/execution_layer/src/test_utils/handle_rpc.rs
#	beacon_node/store/src/partial_beacon_state.rs
#	consensus/types/src/beacon_block.rs
#	consensus/types/src/beacon_block_body.rs
#	consensus/types/src/beacon_state.rs
#	consensus/types/src/config_and_preset.rs
#	consensus/types/src/execution_payload.rs
#	consensus/types/src/execution_payload_header.rs
#	consensus/types/src/light_client_optimistic_update.rs
#	consensus/types/src/payload.rs
#	lcli/src/parse_ssz.rs

account_manager/src/lib.rs

@@ -22,7 +22,7 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
 }
 
 /// Run the account manager, returning an error if the operation did not succeed.
-pub fn run<T: EthSpec>(matches: &ArgMatches<'_>, env: Environment<T>) -> Result<(), String> {
+pub fn run<E: EthSpec>(matches: &ArgMatches<'_>, env: Environment<E>) -> Result<(), String> {
     match matches.subcommand() {
         (wallet::CMD, Some(matches)) => wallet::cli_run(matches)?,
         (validator::CMD, Some(matches)) => validator::cli_run(matches, env)?,

account_manager/src/validator/create.rs

@@ -112,9 +112,9 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
         )
 }
 
-pub fn cli_run<T: EthSpec>(
+pub fn cli_run<E: EthSpec>(
     matches: &ArgMatches,
-    env: Environment<T>,
+    env: Environment<E>,
     validator_dir: PathBuf,
 ) -> Result<(), String> {
     let spec = env.core_context().eth2_config.spec;

account_manager/src/validator/mod.rs

@@ -39,7 +39,7 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
         .subcommand(exit::cli_app())
 }
 
-pub fn cli_run<T: EthSpec>(matches: &ArgMatches, env: Environment<T>) -> Result<(), String> {
+pub fn cli_run<E: EthSpec>(matches: &ArgMatches, env: Environment<E>) -> Result<(), String> {
     let validator_base_dir = if matches.value_of("datadir").is_some() {
         let path: PathBuf = clap_utils::parse_required(matches, "datadir")?;
         path.join(DEFAULT_VALIDATOR_DIR)
@@ -49,7 +49,7 @@ pub fn cli_run<T: EthSpec>(matches: &ArgMatches, env: Environment<T>) -> Result<
     eprintln!("validator-dir path: {:?}", validator_base_dir);
 
     match matches.subcommand() {
-        (create::CMD, Some(matches)) => create::cli_run::<T>(matches, env, validator_base_dir),
+        (create::CMD, Some(matches)) => create::cli_run::<E>(matches, env, validator_base_dir),
         (modify::CMD, Some(matches)) => modify::cli_run(matches, validator_base_dir),
         (import::CMD, Some(matches)) => import::cli_run(matches, validator_base_dir),
         (list::CMD, Some(_)) => list::cli_run(validator_base_dir),

account_manager/src/validator/slashing_protection.rs

@@ -53,9 +53,9 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
         )
 }
 
-pub fn cli_run<T: EthSpec>(
+pub fn cli_run<E: EthSpec>(
     matches: &ArgMatches<'_>,
-    env: Environment<T>,
+    env: Environment<E>,
     validator_base_dir: PathBuf,
 ) -> Result<(), String> {
     let slashing_protection_db_path = validator_base_dir.join(SLASHING_PROTECTION_FILENAME);
@@ -64,7 +64,7 @@ pub fn cli_run<T: EthSpec>(
         .ok_or("Unable to get testnet configuration from the environment")?;
 
     let genesis_validators_root = eth2_network_config
-        .genesis_validators_root::<T>()?
+        .genesis_validators_root::<E>()?
         .ok_or_else(|| "Unable to get genesis state, has genesis occurred?".to_string())?;
 
     match matches.subcommand() {