bc682ff No need set initial value to tag and dependencies in wait handler

Authored and Committed by cqi 5 years ago
    No need set initial value to tag and dependencies in wait handler
    
    Both tag and dependencies are set directly by calling private method
    _get_deps_and_tag. There is no need to set initial value for them
    separately.
    
    Signed-off-by: Chenxiong Qi <cqi@redhat.com>