Limit parallelization and dedicate resources to ICP Rosetta integrati…

…on tests

rs/rosetta-api/icp/tests/integration_tests/BUILD.bazel

@@ -54,6 +54,7 @@ rust_test_suite(
         "POCKET_IC_BIN": "$(rootpath //rs/pocket_ic_server:pocket-ic-server)",
         "REPLICA_BIN": "$(rootpath //rs/replica)",
         "ROSETTA_PATH": "$(rootpath //rs/rosetta-api/icp:ic-rosetta-api-rosetta-blocks)",
+        "RUST_TEST_THREADS": "4",
         "SANDBOX_LAUNCHER": "$(rootpath //rs/canister_sandbox:sandbox_launcher)",
         "IC_SENDER_CANISTER_WASM_PATH": "$(rootpath //rs/rosetta-api/icp/test_utils/sender_canister:ic-sender-canister)",
         "ICP_LEDGER_DEPLOYED_VERSION_WASM_PATH": "$(rootpath @mainnet_icp_ledger_canister//file)",
@@ -63,8 +64,7 @@ rust_test_suite(
     flaky = True,
     proc_macro_deps = [
     ],
-    # The test runs replica binary that constantly uses more than 100% cpu core + rosetta server.
-    tags = ["cpu:3"],
+    tags = ["cpu:4"],
     deps = DEPENDENCIES + [
         ":rosetta-integration-tests-lib",
         "//rs/rosetta-api/icp/test_utils/sender_canister:ic_sender_canister_lib",