Eliminate support for V0 manifests, migrate all to V1.

services/shell/tests/shell/target_manifest.json

Index: services/shell/tests/shell/target_manifest.json
diff --git a/services/shell/tests/shell/target_manifest.json b/services/shell/tests/shell/target_manifest.json
index 0216a9623678ec20c35b6779db18a60a0b223171..d1e82a878eefde2bea924eb07c9672e98a06d372 100644
--- a/services/shell/tests/shell/target_manifest.json
+++ b/services/shell/tests/shell/target_manifest.json
@@ -1,5 +1,12 @@
 {
+  "manifest_version":  1,
   "name": "exe:shell_unittest_target",
   "display_name": "Shell Unittest: Target",
-  "capabilities": { "mojo:shell_unittest": [ "shell::test::mojom::CreateInstanceTest" ] }
+  "capabilities": {
+    "required": {
+      "mojo:shell_unittest": {
+        "interfaces": [ "shell::test::mojom::CreateInstanceTest" ]
+      }
+    }
+  }
 }