Comment 13 for bug 1708731

Reviewed: https://review.openstack.org/563990
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=f68e7822f46ec9577e5a866a67cc54b777240486
Submitter: Zuul
Branch: stable/queens

commit f68e7822f46ec9577e5a866a67cc54b777240486
Author: Jakub Libosvar <email address hidden>
Date: Wed Apr 18 10:25:01 2018 +0000

    ovs-fw: Apply openflow rules immediately during update

    Because update operation updates openflow rules three times:
     1) New rules with new cookie
     2) Delete old rules with old cookie
     3) Change new cookie back to old cookie

    and the step 2) uses --strict parameter, it's needed to apply rules
    before deleting the old rules because --strict parameter cannot be
    combined with non-strict. This patch applies openflow rules after
    step 1), then --strict rules in step 2 are applied right away and then
    rest of delete part from 2) and all new rules from 3) are applied
    together.

    This patch adds optional interval parameter to Pinger class which sends
    more ICMP packets per second in the firewall blink tests to increase a
    chance of sending a packet while firewall is in inconsistent state.

    Change-Id: I25d9c87225feda1b5ddd442dd01529424186e05b
    Closes-bug: #1708731