Add e2e tests using multisig

Author: Seulgi Kim

test/package.json

@@ -43,8 +43,8 @@
     "blakejs": "^1.1.0",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
-    "codechain-primitives": "^0.5.0",
-    "codechain-sdk": "https://github.com/sgkim126/codechain-sdk-js.git#seq-lib",
+    "codechain-primitives": "^1.0.0",
+    "codechain-sdk": "https://github.com/sgkim126/codechain-sdk-js.git#mul-lib",
     "crypto": "^1.0.1",
     "dgram": "^1.0.1",
     "elliptic": "^6.4.1",