Open Stack

Hi, I'd like you to take a look at this patch for potential
DocImpact.
https://review.openstack.org/21484

Log:
commit 5d6546a2b17ee6190d1a823d881118aeec8388f8
Author: Chet Burgess <cfb at metacloud.com>
Date:   Wed Feb 6 07:32:03 2013 +0000

    preserve order of pre-existing iptables chains
    
    Adds new configuration options:
    
        iptables_top_regex='' (Default)
            When set treated as a regular expression to match
            iptables rules that should always be placed at the
            top of the table before the nova chains.
    
        iptables_bottom_regex='' (Default)
            When set treated as a regular expression to match
            iptables rules that should always be placed at the
            bottom of the table right before the COMMIT
    
    Additionally the existing iptables tests were no longer
    actually testing the chains we use. In some cases we
    were looking for chains that haven't existed in the
    code base for 2 years. I took the oppurtunity to update
    all tests to actually test for the chains we care about.
    
    Flags: DocImpact
    
    Change-Id: I335ca3712d6dd37051cc8e46e1237aaf66a4a94e
    Fixes: bug #1116562