fix: add ember-fetch via a default blueprint instead

Author: knownasilya

blueprints/ember-cli-new-version/index.js

@@ -0,0 +1,8 @@
+module.exports = {
+  normalizeEntityName() {}, // no-op since we're just adding dependencies
+
+  afterInstall() {
+    // Add addons to package.json and run defaultBlueprint
+    return this.addAddonToProject('ember-fetch');
+  }
+};

package.json

@@ -41,7 +41,8 @@
     "loader.js": "^4.7.0",
     "mirage": "0.0.7",
     "qunit-dom": "^0.8.0",
-    "standard-version": "^4.4.0"
+    "standard-version": "^4.4.0",
+    "ember-fetch": "^6.4.0"
   },
   "keywords": [
     "ember-addon",
@@ -64,8 +65,7 @@
     "broccoli-file-creator": "^2.1.1",
     "ember-cli-babel": "^7.1.2",
     "ember-cli-htmlbars": "^3.0.1",
-    "ember-concurrency": "^0.8.26",
-    "ember-fetch": "^6.4.0"
+    "ember-concurrency": "^0.8.26"
   },
   "ember-addon": {
     "configPath": "tests/dummy/config"