Change repo_dir_path value to /tmp/repository

Signed-off-by: Michael Shepos <shepos@us.ibm.com>
Change-Id: I8ef77cb5d3bb1fee327feee1d0a840f21be1ec31
diff --git a/lib/open_power_utils.robot b/lib/open_power_utils.robot
index 5274534..77b50e0 100644
--- a/lib/open_power_utils.robot
+++ b/lib/open_power_utils.robot
@@ -175,7 +175,7 @@
 Inject OPAL TI
     [Documentation]  OPAL terminate immediate procedure.
     [Arguments]      ${stable_branch}=master
-    ...              ${repo_dir_path}=${EXECDIR}/repository
+    ...              ${repo_dir_path}=/tmp/repository
     ...              ${repo_github_url}=https://github.com/open-power/op-test
 
     # Description of arguments: