[kdump] restrict lsinitrd command to fetch only modules

While validating dump component let's restrict lsinitrd command
to only output dump component list instead of the full initrd content.

This will avoid a false match when a path of a file in initrd contains
dump modules names. Additionally, it improves the module lookup time.

Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>

Author: sourabhjains

servicereportpkg/validate/plugins/kdump.py

@@ -69,7 +69,7 @@ def check_dump_component_in_initrd(self):
             status = False
 
         else:
-            (return_code, stdout) = execute_command(["lsinitrd",
+            (return_code, stdout) = execute_command(["lsinitrd", "-m",
                                                      self.initial_ramdisk])[:-1]
 
             if return_code is None: