[GO] Tries to add go format to the CI (#6518)

* Trys to add go format to the CI

Adds Gofmt to CI

* Adds formatting for go dir in grpc

* Small fix

.travis/format_check.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2020 Google Inc. All rights reserved.
+# Copyright 2021 Google Inc. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,6 +23,15 @@ nvm use default
 
 sh src/clang-format-git.sh
 
+# Check formatting for go lang
+
+cd go
+gofmt -w .
+cd ..
+cd grpc/examples/go
+sh format.sh
+cd ../../..
+
 node_modules/.bin/eslint ts/** --ext .ts --quiet --fix
 
 #PYTHON IS DISABLED UNTIL WE CREATE A .pylintrc FILE FOR IT
@@ -30,6 +39,7 @@ pylint python/** --disable=all
 
 swiftformat --config swift.swiftformat .
 
+
 if ! git diff --quiet; then
   echo >&2
   echo "ERROR: ********************************************************" >&2

.travis/format_install.sh

@@ -55,7 +55,15 @@ install_languages() {
 
   export PATH="~/swiftbuild/swift-5.3.1-RELEASE-ubuntu16.04/usr/bin:$PATH"
 
+
+  mkdir ~/gobuild
+  wget -c https://golang.org/dl/go1.15.2.linux-amd64.tar.gz
+  tar -xvzf go1.15.2.linux-amd64.tar.gz -C ~/gobuild
+
+  export  PATH="~/gobuild/go/bin:$PATH"
+
   swift --version
+  go version
   yarn -v
   node -v
 }