Name changes for FFDC Test Cases: "FFDC On Test Case Fail" and "FFDC"

Changed FFDC Test Cases Names in lib/openbmc_ffdc.robot:
Changed the name of "Log FFDC" to "FFDC On Test Case Fail"
Changed the name of "Log FFDC If Test Case Failed" to  "FFDC"
The names were reversed..
"Log FFDC" had a check to see if Test Case failed.
"Log FFDC If Test Case Failed" had the actual FFDC gathering.

Change-Id: I50a0cae783180c4bdbe82c94f2cd57f803a05998
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/tests/test_fan.robot b/tests/test_fan.robot
index 718ad5e..ce7e990 100644
--- a/tests/test_fan.robot
+++ b/tests/test_fan.robot
@@ -3,7 +3,7 @@
 Suite Teardown    Delete All Sessions
 Resource          ../lib/rest_client.robot
 Resource          ../lib/openbmc_ffdc.robot
-Test Teardown     Log FFDC
+Test Teardown     FFDC On Test Case Fail
 
 *** Test Cases ***
 Empty Fan Test