Config file option to skip the hook script creation
    
    A new option named "skip_hooks" can be added to the config file
    (into the main section). It accepts boolean values and when
    the option is present and set, it prevents creating the pre-push
    hook script during cloning a dist-git repository.
    
    Fixes: https://pagure.io/fedpkg/issue/515
    JIRA: RHELCMP-11491
    
    Signed-off-by: Ondrej Nosek <onosek@redhat.com>