Merge pull request crossplane-contrib#197 from bassam/pr-fix-skip-ci

build: use token when curling to github

Jenkinsfile

@@ -19,7 +19,7 @@ pipeline {
                 script {
                     if (env.BRANCH_NAME =~ /^PR-\d+$/) {
                         def pr_number = sh (script: "echo ${env.BRANCH_NAME} | grep -o -E '[0-9]+' ", returnStdout: true)
-                        def json = sh (script: "curl -s https://api.github.com/repos/crossplaneio/crossplane/pulls/${pr_number}", returnStdout: true).trim()
+                        def json = sh (script: 'curl -s -H "Authorization: token ${GITHUB_UPBOUND_BOT}" https://api.github.com/repos/crossplaneio/crossplane/pulls/${pr_number}', returnStdout: true).trim()
                         def body = evaluateJson(json,'${json.body}')
                         if (body.contains("[skip ci]")) {
                             echo ("'[skip ci]' spotted in PR body text.")