Added merchant_id back to env

.env.test

@@ -1,8 +1,6 @@
 export AK_API_URL="https://act.sumofus.org/rest/v1"
 export MEMBER_SERVICES_SECRET='member-services-secret'
-# The next var is loaded via CircleCI env vars since it's sensible info
-# idea: try to configure replayer to match the requests without this variable
-# export BRAINTREE_MERCHANT_ID=""
+export BRAINTREE_MERCHANT_ID="6ngbwhytbhrz9z2r"
 export BRAINTREE_PUBLIC_KEY='public-key'
 export BRAINTREE_PRIVATE_KEY='private-key'
 export BRAINTREE_ENV=Sandbox