root,create-app: switch over to using backstage-cli test in root

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

.changeset/young-ways-trade.md

@@ -0,0 +1,12 @@
+---
+'@backstage/create-app': patch
+---
+
+Switched the default `test` script in the package root to use `backstage-cli test` rather than `lerna run test`. This is thanks to the `@backstage/cli` now supporting running the test command from the project root.
+
+To apply this change to an existing project, apply the following change to your root `package.json`:
+
+```diff
+-    "test": "lerna run test --since origin/master -- --coverage",
++    "test": "backstage-cli test",
+```

package.json

@@ -16,7 +16,7 @@
     "tsc:full": "backstage-cli clean && tsc --skipLibCheck false --incremental false",
     "clean": "backstage-cli clean && lerna run clean",
     "diff": "lerna run diff --",
-    "test": "lerna run test --since origin/master -- --coverage",
+    "test": "backstage-cli test",
     "test:all": "lerna run test -- --coverage",
     "lint": "lerna run lint --since origin/master --",
     "lint:docs": "node ./scripts/check-docs-quality",

packages/create-app/templates/default-app/package.json.hbs

@@ -15,7 +15,7 @@
     "tsc:full": "tsc --skipLibCheck false --incremental false",
     "clean": "backstage-cli clean && lerna run clean",
     "diff": "lerna run diff --",
-    "test": "lerna run test --since origin/master -- --coverage",
+    "test": "backstage-cli test",
     "test:all": "lerna run test -- --coverage",
     "lint": "lerna run lint --since origin/master --",
     "lint:all": "lerna run lint --",