Update dracut to rev 154 via SR 787362
    
    https://build.opensuse.org/request/show/787362
    by user dmolkentin + dimstar_suse
    - Update to version 049.1+git138.9068a629:
      * systemd: install systemd-tty-ask-password-agent systemd-ask-password
      * Mark interface setup after dhcp (bsc#1167161)
      * Store nameserver received from wicked dhcp lease (bsc#1167161)
    
    - Changed scheme to 049.1+suse.139.g8a7d3d9e to match systemd package
      * Scheme pattern> <PARENT_TAG>+suse.<TAG_OFFSET>.g<SHA1>
      * No functional change