migration: Change name of live migration thread

Change the name of live migration thread from 'migration'
to 'live_migration' to identify it clearly. 'migration'
is a generic word and kernel also has  tasks for process
migration with the name 'migration/cpu#'.
Signed-off-by: NPankaj Gupta <pagupta@redhat.com>
Message-Id: <1485178976-15225-1-git-send-email-pagupta@redhat.com>
Reviewed-by: NJuan Quintela <quintela@redhat.com>
Reviewed-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: NAmit Shah <amit.shah@redhat.com>
Signed-off-by: NDr. David Alan Gilbert <dgilbert@redhat.com>

migration/migration.c

@@ -2024,7 +2024,7 @@ void migrate_fd_connect(MigrationState *s)
     }
 
     migrate_compress_threads_create();
-    qemu_thread_create(&s->thread, "migration", migration_thread, s,
+    qemu_thread_create(&s->thread, "live_migration", migration_thread, s,
                        QEMU_THREAD_JOINABLE);
     s->migration_thread_running = true;
 }