Remove DL0 specific code from replicainstall in ipaserver/install/server
    
    create_replica_config is not imported anymore from
    ipaserver.install.installutils.
    
    The promote argument has been removed from these functions and function
    calls:
    - install_replica_ds
    - ds.create_replica
    - install_krb
    - krbinstance.create_replica
    - install_http
    - httpinstance.create_instance
    
    The function install_check has been removed completely as it is only used
    to prepare the DL0 installation.
    
    All DL0 specific code has been removed from the install function.
    
    The varaibles promote, installer.promote/options.promote  and config.promote
    have bene removed.
    
    See: https://pagure.io/freeipa/issue/7689
    Signed-off-by: Thomas Woerner <twoerner@redhat.com>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
    Reviewed-By: Christian Heimes <cheimes@redhat.com>