add default base to fixtures

Author: Kelly Selden

test/fixtures/blueprint/app/legacy-app/local/my-app/config2/ember-cli-update.json

@@ -1,14 +1,26 @@
 {
   "schemaVersion": 0,
   "packages": [
+    {
+      "name": "ember-cli",
+      "version": "3.11.0-beta.1",
+      "blueprints": [
+        {
+          "name": "app",
+          "isBaseBlueprint": true,
+          "options": [
+            "--no-welcome"
+          ]
+        }
+      ]
+    },
     {
       "name": "ember-cli-update-git-blueprint-test",
       "location": "../legacy-blueprint",
       "version": "0.0.1",
       "blueprints": [
         {
           "name": "ember-cli-update-git-blueprint-test",
-          "isBaseBlueprint": true,
           "options": [
             "--custom-option=123"
           ]

test/fixtures/blueprint/app/legacy-app/local/my-app/package.json

@@ -3,6 +3,9 @@
   "version": "0.0.0",
   "description": "",
   "main": "index.js",
+  "devDependencies": {
+    "ember-cli": "~3.11.0-beta.1"
+  },
   "ember-addon": {
     "configPath": "config2"
   }

test/fixtures/blueprint/app/legacy-app/merge/my-app/config2/ember-cli-update.json

@@ -1,14 +1,26 @@
 {
   "schemaVersion": 0,
   "packages": [
+    {
+      "name": "ember-cli",
+      "version": "3.11.0-beta.1",
+      "blueprints": [
+        {
+          "name": "app",
+          "isBaseBlueprint": true,
+          "options": [
+            "--no-welcome"
+          ]
+        }
+      ]
+    },
     {
       "name": "ember-cli-update-git-blueprint-test",
       "location": "../legacy-blueprint",
       "version": "0.0.2",
       "blueprints": [
         {
           "name": "ember-cli-update-git-blueprint-test",
-          "isBaseBlueprint": true,
           "options": [
             "--custom-option=123"
           ]

test/fixtures/blueprint/app/legacy-app/merge/my-app/package.json

@@ -3,6 +3,9 @@
   "version": "0.0.0",
   "description": "",
   "main": "index.js",
+  "devDependencies": {
+    "ember-cli": "~3.11.0-beta.1"
+  },
   "ember-addon": {
     "configPath": "config2"
   }

test/integration/index-test.js

@@ -367,7 +367,7 @@ applicable codemods: ember-modules-codemod, ember-qunit-codemod, ember-test-help
         let {
           location,
           version: to
-        } = (await loadSafeBlueprintFile('test/fixtures/blueprint/app/legacy-app/merge/my-app/config2/ember-cli-update.json')).blueprints[0];
+        } = (await loadSafeBlueprintFile('test/fixtures/blueprint/app/legacy-app/merge/my-app/config2/ember-cli-update.json')).blueprints[1];
 
         let {
           status