Don't include :code by default in storage proofs (#5179)

* Don't include `:code` by default in storage proofs (#5060)

* Adds test to verify that the runtime currently is always contained in
the proof

* Start passing the runtime wasm code from the outside

* Fix compilation

* More build fixes

* Make the test work as expected now :)

* Last fixes

* Fixes benchmarks

* Review feedback

* Apply suggestions from code review

Co-Authored-By: Sergei Pepyakin <sergei@parity.io>

* Review feedback

* Fix compilation

Co-authored-by: Sergei Pepyakin <s.pepyakin@gmail.com>

* Fix compilation and change the way `RuntimeCode` works

* Fix tests

* Switch to `Cow`

Co-authored-by: Benjamin Kampmann <ben@gnunicorn.org>
Co-authored-by: Sergei Pepyakin <s.pepyakin@gmail.com>

substrate/client/executor/src/integration_tests/mod.rs

@@ -49,6 +49,7 @@ fn call_in_wasm<E: Externalities>(
 	);
 	executor.call_in_wasm(
 		&WASM_BINARY[..],
+		None,
 		function,
 		call_data,
 		ext,
@@ -513,6 +514,7 @@ fn should_trap_when_heap_exhausted(wasm_method: WasmExecutionMethod) {
 	);
 	executor.call_in_wasm(
 		&WASM_BINARY[..],
+		None,
 		"test_exhaust_heap",
 		&[0],
 		&mut ext.ext(),