update PR test readme, scripts

PR-Testing/README

@@ -1,7 +1,7 @@
 These files are leveraged by the test-openshift-pipeline-plugin job at https://ci.openshift.redhat.com/jenkins.
 A test image based off of the jenkins image at https://github.com/openshift/jenkins will be built with the dockerfile
 here and any OpenShift Jenkins plugin file stored in the PR-Testing/jpi file as "openshift-pipeline.jpi".  In the case of
-the test-openshift-pipeline-plugin job, it will be the hpi file from your PR.  But you can also test any local changes
+the https://ci.openshift.redhat.com/jenkins/view/All/job/test_branch_jenkins_plugin/ job , it will be the hpi file from your PR.  But you can also test any local changes
 you have to the plugin in the same way.
 
 To test your changes locally:
@@ -13,7 +13,7 @@ This script will build the docker image: openshift/jenkins-plugin-snapshot-test:
 Next, run the extended tests for the plugin located at https://github.com/openshift/origin.
 To target the snapshot image built above, set the environment variable USE_SNAPSHOT_JENKINS_IMAGE
 to a non-empty string. For example, from the top level directory of the origin repository, run:
-    USE_SNAPSHOT_JENKINS_IMAGE=1 test/extended/core.sh --ginkgo.focus='openshift pipeline plugin' -ginkgo.v
+    USE_SNAPSHOT_JENKINS_IMAGE=1 make test-extended SUITE=core FOCUS='openshift pipeline plugin'
 
 Note: Specifying the environment variable on the same line as the command to run limits the variable's lifetime to
 the invocation of the test framework. Limiting the variable's lifetime is not required, but is encouraged to ensure