feat: add host arg to k6 script and set default value to localhost

sbroad-cartridge/stress-test/groupby/k6.js

 import tarantool from "k6/x/tarantool";
 import { updateSuccessRate } from '../metrics.js';
 
+let host = "localhost";
+if (__ENV.HOST) {
+    host = __ENV.HOST;
+}
+
 const clients = [
-    tarantool.connect(["localhost:3301"], {"user": "admin", pass: "app-cluster-cookie"}),
+    tarantool.connect([host + ":3301"], {"user": "admin", pass: "app-cluster-cookie"}),
 ]
 
-const pattern = `SELECT "a0"+"a1"+"a2", "a1", "a1"+"a2", "a3", "a4", "a5" + "a1", "a1"+"a6", "a7"*"a9", "a8", "a9" 
+const pattern = `SELECT "a0"+"a1"+"a2", "a1", "a1"+"a2", "a3", "a4", "a5" + "a1", "a1"+"a6", "a7"*"a9", "a8", "a9"
                 FROM "t"
                 GROUP BY "a1", "a3", "a4", "a0"+"a1"+"a2", "a5" + "a1", "a1"+"a2",  "a8", "a9", "a1"+"a6", "a7"*"a9"
 `

sbroad-cartridge/stress-test/insert/k6.js

@@ -2,11 +2,16 @@ import tarantool from "k6/x/tarantool";
 import {uuidv4} from 'https://jslib.k6.io/k6-utils/1.1.0/index.js';
 import { updateSuccessRate } from '../metrics.js';
 
+let host = "localhost";
+if (__ENV.HOST) {
+    host = __ENV.HOST;
+}
+
 const clients = [
-    tarantool.connect(["localhost:3301"], {"user": "admin", pass: "app-cluster-cookie"}),
-    tarantool.connect(["localhost:3306"], {"user": "admin", pass: "app-cluster-cookie"}),
-    tarantool.connect(["localhost:3307"], {"user": "admin", pass: "app-cluster-cookie"}),
-    tarantool.connect(["localhost:3308"], {"user": "admin", pass: "app-cluster-cookie"})
+    tarantool.connect([host + ":3301"], {"user": "admin", pass: "app-cluster-cookie"}),
+    tarantool.connect([host + ":3306"], {"user": "admin", pass: "app-cluster-cookie"}),
+    tarantool.connect([host + ":3307"], {"user": "admin", pass: "app-cluster-cookie"}),
+    tarantool.connect([host + ":3308"], {"user": "admin", pass: "app-cluster-cookie"})
 ]
 
 export let current_server = 0

sbroad-cartridge/stress-test/projection/k6.js

@@ -2,7 +2,12 @@ import tarantool from "k6/x/tarantool";
 import {randomItem} from 'https://jslib.k6.io/k6-utils/1.1.0/index.js';
 import { updateSuccessRate } from '../metrics.js';
 
-const client = tarantool.connect(["localhost:3301"], {"user": "admin", pass: "app-cluster-cookie"})
+let host = "localhost";
+if (__ENV.HOST) {
+    host = __ENV.HOST;
+}
+
+const client = tarantool.connect([host + ":3301"], {"user": "admin", pass: "app-cluster-cookie"})
 
 let ids = Array.from(
     {
@@ -26,4 +31,4 @@ let pattern = `SELECT *
 export default () => {
     var resp = tarantool.call(client, "sbroad.execute", [pattern, [randomItem(ids)]]);
     updateSuccessRate(resp);
-}
\ No newline at end of file
+}

sbroad-cartridge/stress-test/projection_wide/k6.js

@@ -2,11 +2,16 @@ import tarantool from "k6/x/tarantool";
 import {randomItem} from 'https://jslib.k6.io/k6-utils/1.1.0/index.js';
 import { updateSuccessRate } from '../metrics.js';
 
+let host = "localhost";
+if (__ENV.HOST) {
+    host = __ENV.HOST;
+}
+
 const clients = [
-    tarantool.connect(["localhost:3301"], {"user": "admin", pass: "app-cluster-cookie"}),
-    tarantool.connect(["localhost:3306"], {"user": "admin", pass: "app-cluster-cookie"}),
-    tarantool.connect(["localhost:3307"], {"user": "admin", pass: "app-cluster-cookie"}),
-    tarantool.connect(["localhost:3308"], {"user": "admin", pass: "app-cluster-cookie"})
+    tarantool.connect([host + ":3301"], {"user": "admin", pass: "app-cluster-cookie"}),
+    tarantool.connect([host + ":3306"], {"user": "admin", pass: "app-cluster-cookie"}),
+    tarantool.connect([host + ":3307"], {"user": "admin", pass: "app-cluster-cookie"}),
+    tarantool.connect([host + ":3308"], {"user": "admin", pass: "app-cluster-cookie"})
 ]
 
 export let current_server = 0