chore(Jenkins): Update Golang build container to 1.12

AJ Bond · AJ Bond · commit b9042f810d5e · 2019-04-12T15:51:21.000-04:00
Update which image is used during the build operations
diff --git a/api-compat.Jenkinsfile b/api-compat.Jenkinsfile
@@ -1,6 +1,6 @@
 properties([disableConcurrentBuilds()])
 
-node("dind") {
+node("dind-1-12") {
     container('dind') {
         // This method is provided by the private api-compatibility library.
         compat.test_build()
