Added db reset to new e2e framework

- Ensure that the DB is always reset between tests
- We assume that the DB will be torn down and rebuilt between tests
- Without this, previous tests clobber the current tests, and it's not possible to tell when running files in isolation
which makes developing really tricky

test/regression/api/admin/authentication.test.js

@@ -20,10 +20,6 @@ describe('Authentication API canary', function () {
             agent = await framework.getAgent('/ghost/api/canary/admin/');
         });
 
-        after(async function () {
-            await framework.resetDb();
-        });
-
         beforeEach(function () {
             emailStub = framework.stubMail();
         });

test/utils/e2e-framework.js

@@ -45,6 +45,9 @@ const startGhost = async () => {
         server: false
     };
 
+    // Ensure the DB state
+    await resetDb();
+
     return boot(defaults);
 };
 
@@ -105,7 +108,7 @@ const getFixture = (type, index = 0) => {
 };
 
 const resetDb = async () => {
-    await db.teardown();
+    await db.reset();
 };
 
 /**