update travis matrix to change vendor url

Author: CaseyFaist

.travis.yml

@@ -25,11 +25,20 @@ jobs:
     if: branch = master
     name: Run Hatchet
     script: "bundle exec rspec"
+
+matrix:
+  include:
+    - env: TESTFOLDER=test/run-deps
+    - env: TESTFOLDER=test/run-deps
+           VENDOR_URL=https://lang-python.s3.amazonaws.com/staging/$STACK
+    - env: TESTFOLDER=test/run-versions
+    - env: TESTFOLDER=test/run-versions
+           VENDOR_URL=https://lang-python.s3.amazonaws.com/staging/$STACK
+    - env: TESTFOLDER=test/run-features
+    - env: TESTFOLDER=test/run-features
+           VENDOR_URL=https://lang-python.s3.amazonaws.com/staging/$STACK
+
 env:
-  matrix:
-    - TESTFOLDER=test/run-deps
-    - TESTFOLDER=test/run-versions
-    - TESTFOLDER=test/run-features
   global:
     - HATCHET_RETRIES=3
     - IS_RUNNING_ON_CI=true