ci: update config again.........

.travis.yml

 language: go
+
 go:
   - 1.12.x
   - 1.13.x
   - tip
 
-env: GO111MODULE=on GOFLAGS='-mod vendor'
+env:
+  global:
+    - GO111MODULE=on
+    - GOFLAGS='-mod vendor'
+    - PATH=${TRAVIS_BUILD_DIR}/bin:${PATH}
 
 before_script:
   - go get github.com/onsi/gomega
@@ -19,11 +24,11 @@ install: true
 
 script:
   - $HOME/gopath/bin/ginkgo -r --randomizeAllSpecs --randomizeSuites --failOnPending --coverpkg gitserver --trace --race --compilers=2
-
-os:
-  - linux
-  - osx
-  - windows
+#
+#os:
+#  - linux
+#  - osx
+#  - windows
 
 after_success:
   - gover . coverage.txt