Fix for the test - Test Bmc Upload Stability - failure

Change-Id: Ide05e1d291a40dd1e92e8182a8b1a271f8aae436
Signed-off-by: Vijay Kantanavar <vikantan@in.ibm.com>
diff --git a/extended/test_bmc_upload_stability.robot b/extended/test_bmc_upload_stability.robot
index 4decba4..94f0e87 100755
--- a/extended/test_bmc_upload_stability.robot
+++ b/extended/test_bmc_upload_stability.robot
@@ -67,7 +67,7 @@
     ${resp}=  Post Request  openbmc  /upload/image  &{data}
     Should Be Equal As Strings  ${resp.status_code}  ${HTTP_OK}
 
-    BMC Execute Command  rm -f /tmp/images/*  quiet=${1}
+    BMC Execute Command  rm -rf /tmp/images/*  quiet=${1}
 
     ${loop_count}=  Catenate  Ending iteration: ${iteration}
     Rpvars  loop_count