Further improve settings for extra tests from GitLab

tests/lakedrops.yml

@@ -47,6 +47,7 @@ Test PHPUnit:
 Test Behat:
   <<: *test_lakedrops_default
   needs:
+    - job: Build Site
     - job: Import DB
       optional: true
     - job: Update DB
@@ -68,6 +69,8 @@ Test Behat:
 Test Backstop:
   <<: *test_lakedrops_default
   needs:
+    - job: Build Site
+    - job: Build Theme
     - job: Import DB
       optional: true
     - job: Update DB