Make wasm runtime cache size configurable (#10177)

* Make wasm runtime cache size configurable

* apply review comments

* remove VersionedRuntimeValue

* fix compilation

* VersionedRuntime: replace clone by Arc

* fmt

* fix warnings

* fix tests compilation

* fmt

substrate/client/service/src/client/call_executor.rs

@@ -360,6 +360,7 @@ mod tests {
 			WasmExecutionMethod::Interpreted,
 			Some(128),
 			1,
+			2,
 		);
 
 		let overrides = crate::client::wasm_override::dummy_overrides();

substrate/client/service/src/client/wasm_override.rs

@@ -282,6 +282,7 @@ mod tests {
 				WasmExecutionMethod::Interpreted,
 				Some(128),
 				1,
+				2,
 			);
 		let bytes = substrate_test_runtime::wasm_binary_unwrap();
 		let dir = tempfile::tempdir().expect("Create a temporary directory");
@@ -295,6 +296,7 @@ mod tests {
 			WasmExecutionMethod::Interpreted,
 			Some(128),
 			1,
+			2,
 		);
 
 		let version = WasmOverride::runtime_version(

substrate/client/service/src/config.rs

@@ -132,6 +132,8 @@ pub struct Configuration {
 	pub base_path: Option<BasePath>,
 	/// Configuration of the output format that the informant uses.
 	pub informant_output_format: sc_informant::OutputFormat,
+	/// Maximum number of different runtime versions that can be cached.
+	pub runtime_cache_size: u8,
 }
 
 /// Type for tasks spawned by the executor.