dlm_controld: add -fplugin=annobin to CFLAGS
    
    This patch adds fplugin=annobin to the CFLAGS of dlm_controld. The tool
    annocheck gave a failure and it's recommended to add such flag to fix
    the issue. Afterwards the failure is gone.
    
    https://sourceware.org/annobin/annobin.html/Test-notes.html