Changed 'Header Message' to return list of generated files.

It is important for FFDC functions to return a complete list of
generated files rather than leaving the caller to guess what files were
created or have to go searching for them.

Change-Id: Id20b0285add749ef38d67f40995a41bef54f3d37
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/lib/openbmc_ffdc_utils.robot b/lib/openbmc_ffdc_utils.robot
index 1779959..a2efabe 100644
--- a/lib/openbmc_ffdc_utils.robot
+++ b/lib/openbmc_ffdc_utils.robot
@@ -62,7 +62,8 @@
 
 
 Header Message
-    [Documentation]     Write header message to the report document manifest.
+    [Documentation]     Write header message to the report document manifest
+    ...                 and return a list of generated files.
     ...                 TEST_NAME, TEST_MESSAGE,SUITE_SOURCE,TEST_DOCUMENTATION
     ...                 are auto variables and are populated dynamically by the
     ...                 robot framework during execution
@@ -91,6 +92,8 @@
     \   Write Data To File   ${\n}
 
     Write Data To File    ${MSG_DETAIL}
+    ${ffdc_file_list}=  Create List  ${FFDC_FILE_PATH}
+    [Return]  ${ffdc_file_list}
 
 
 Write Cmd Output to FFDC File