test: migrate e2e/tx tests to systemtest (#22152)

tests/e2e/tx/testdata/tx_amino1.json

@@ -1 +0,0 @@
-{"type":"cosmos-sdk/StdTx","value":{"msg":[{"type":"cosmos-sdk/MsgSend","value":{"from_address":"cosmos1hzw8v2kk4csg8xr3fhy8ykyymykknm2tdgvf7k","to_address":"cosmos1hzw8v2kk4csg8xr3fhy8ykyymykknm2tdgvf7k","amount":[{"denom":"stake","amount":"10"}]}}],"fee":{"amount":[{"denom":"stake","amount":"10"}],"gas":"200000"},"signatures":[],"memo":"foobar","timeout_height":"0"}}

tests/systemtests/testdata/tx_amino1.json

@@ -0,0 +1,32 @@
+{
+    "type": "cosmos-sdk/StdTx",
+    "value": {
+        "msg": [
+            {
+                "type": "cosmos-sdk/MsgSend",
+                "value": {
+                    "from_address": "cosmos1hzw8v2kk4csg8xr3fhy8ykyymykknm2tdgvf7k",
+                    "to_address": "cosmos1hzw8v2kk4csg8xr3fhy8ykyymykknm2tdgvf7k",
+                    "amount": [
+                        {
+                            "denom": "stake",
+                            "amount": "10"
+                        }
+                    ]
+                }
+            }
+        ],
+        "fee": {
+            "amount": [
+                {
+                    "denom": "stake",
+                    "amount": "10"
+                }
+            ],
+            "gas": "200000"
+        },
+        "signatures": [],
+        "memo": "foobar",
+        "timeout_height": "0"
+    }
+}