Merge pull request cms-sw#231 from ktf/master

Misc cleanups to PR testing.

run-pr-tests

@@ -1,11 +1,15 @@
 #!/bin/sh -ex
 
-# Reset kerberos token every time you run.
-aklog
-kinit cmsbuild@CERN.CH -k -t ~/private/cmsbuild.keytab
+# In case we have kerberos and aklog reset token every time you run.
+if [ ! X`which aklog` = X ]; then
+  aklog
+fi
+if [ ! X`which kinit` = X ]; then
+  kinit cmsbuild@CERN.CH -k -t ~/private/cmsbuild.keytab
+fi
 
 cd "$WORKSPACE"
-git clone git@github.com:$CMS_GIT_TOOLS_REPO/cms-git-tools
+git clone https://github.com/$CMS_GIT_TOOLS_REPO/cms-git-tools
 
 ### this is for triggering the comparison with the baseline
   PULL_REQUEST_NUMBER=$PULL_REQUEST