[backport] move from travis-ci.org to travis-ci.com

backports scala#29 to 2.12.x

context: scala/scala-dev#728

Author: SethTisue

scripts/common

@@ -13,7 +13,7 @@ function travis_fold_end() {
 #   - state: pending / success / failed / error
 function postCommitStatus() {
   local jsonTemplate='{ "state": "%s", "target_url": "%s", "description": "%s", "context": "%s"}'
-  local json=$(printf "$jsonTemplate" "$1" "https://travis-ci.org/scala/scala-dist-smoketest/builds/$TRAVIS_BUILD_ID" "$1" "travis/scala-dist-smoketest/$version")
+  local json=$(printf "$jsonTemplate" "$1" "https://travis-ci.com/scala/scala-dist-smoketest/builds/$TRAVIS_BUILD_ID" "$1" "travis/scala-dist-smoketest/$version")
 
   local curlStatus=$(curl \
     -s -o /dev/null -w "%{http_code}" \