fix(ci): update travis to use oauth server in auth server repo

.travis.yml

@@ -31,9 +31,9 @@ group: deprecated-2017Q3
 cache:
   directories:
     - node_modules
-    - deps/node_modules/fxa-auth-server/node_modules
+    - deps/fxa-auth-server/node_modules
     - deps/node_modules/fxa-profile-server/node_modules
-    - deps/node_modules/fxa-oauth-server/node_modules
+    - deps/fxa-auth-server/fxa-oauth-server/node_modules
 
 notifications:
   irc:

tests/ci/deps.sh

@@ -5,19 +5,28 @@ mkdir -p deps/node_modules
 cd deps
 
 # Auth
-git clone https://github.com/mozilla/fxa-auth-server.git --depth=1
-cd fxa-auth-server
+if [ -d fxa-auth-server ]
+then
+  # node_modules is cached and we can't clone into a non-empty directory
+  cd fxa-auth-server
+  git init
+  git remote add origin https://github.com/mozilla/fxa-auth-server.git
+  git fetch origin master
+  git checkout -f -b master origin/master
+else
+  git clone https://github.com/mozilla/fxa-auth-server.git --depth=1
+  cd fxa-auth-server
+fi
 # Install devDeps for the Auth Server to get memory db
 npm i &> /dev/null
 LOG_LEVEL=error node ./node_modules/fxa-auth-db-mysql/bin/mem.js &
 node ./scripts/gen_keys.js
 SIGNIN_UNBLOCK_ALLOWED_EMAILS="^block.*@restmail\\.net$" SIGNIN_UNBLOCK_FORCED_EMAILS="^block.*@restmail\\.net$" npm start &> /dev/null &
-cd ..
 
 # OAuth
 
-npm i mozilla/fxa-oauth-server &> /dev/null
-cd node_modules/fxa-oauth-server
+cd fxa-oauth-server
+npm i > /dev/null
 LOG_LEVEL=error NODE_ENV=dev node ./bin/server.js &
 cd ../..