fix CURL_TIMEOUT settings

tests/unit/build-env.bats

@@ -15,16 +15,41 @@ teardown() {
   echo "output: "$output
   echo "status: "$status
   assert_success
+
   deploy_app
   run dokku config $TEST_APP
   assert_success
 }
 
-@test "(build-env) failure" {
+@test "(build-env) default curl timeouts" {
+  run dokku config:unset --global CURL_CONNECT_TIMEOUT
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+
+  run dokku config:unset --global CURL_TIMEOUT
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+
+  deploy_app
+  run /bin/bash -c "dokku config:get --global CURL_CONNECT_TIMEOUT | grep 5"
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+
+  run /bin/bash -c "dokku config:get --global CURL_TIMEOUT | grep 30"
+  echo "output: "$output
+  echo "status: "$status
+  assert_success
+}
+
+@test "(build-env) buildpack failure" {
   run dokku config:set --no-restart $TEST_APP BUILDPACK_URL='https://github.com/dokku/fake-buildpack'
   echo "output: "$output
   echo "status: "$status
   assert_success
+
   run deploy_app
   echo "output: "$output
   echo "status: "$status