feat: testsuite in format version 2

tests/testsuites/create_users.json

@@ -0,0 +1,29 @@
+{
+    "testcases": {
+        "create user 1001 and check result.": {
+            "testcase": "testcases/create_user.yml",
+            "variables": {
+                "var_d": "$var_c",
+                "var_c": "${gen_random_string(5)}",
+                "uid": 1001
+            }
+        },
+        "create user 1000 and check result.": {
+            "testcase": "testcases/create_user.yml",
+            "variables": {
+                "var_d": "$var_c",
+                "var_c": "${gen_random_string(5)}",
+                "uid": 1000
+            }
+        }
+    },
+    "config": {
+        "variables": {
+            "device_sn": "${gen_random_string(15)}",
+            "var_b": "$var_a",
+            "var_a": "${gen_random_string(5)}"
+        },
+        "name": "create users with uid",
+        "base_url": "http://127.0.0.1:5000"
+    }
+}