[green-dragon-migration] Update zorg test job (#179)

* Update the zorg test job, namely don't duplicate the unnecessary clone
and install the necessary python requirements to run the tests

This code has been tested on https://green.lab.llvm.org/

tasks/zorg-tests.sh

@@ -1,8 +1,8 @@
-build get zorg
-
 . "${TASKDIR}"/utils/venv.sh
+. "${TASKDIR}"/utils/pip_install.sh --upgrade pip
 . "${TASKDIR}"/utils/venv_lit.sh
+. "${TASKDIR}"/utils/pip_install.sh -r config/zorg/jenkins/jobs/requirements.txt
 
 mkdir -p result
-cd "zorg/test/jenkins"
+cd "config/test/jenkins"
 lit --xunit-xml-output="${WORKSPACE}/result/xunit.xml" -v .

zorg/jenkins/jobs/jobs/zorg-tests

@@ -1,8 +1,5 @@
 #!/usr/bin/env groovy
 def common = evaluate readTrusted('zorg/jenkins/common.groovy')
-common.task_pipeline('green-dragon-03') {
-    dir('zorg') {
-        svn url: 'http://llvm.org/svn/llvm-project/zorg/trunk', poll: true
-    }
+common.task_pipeline('macos-x86_64') {
     sh 'config/tasks/task jenkinsrun config/tasks/zorg-tests.sh'
 }