Comment 10 for bug 1427893

Reviewed: https://review.openstack.org/203871
Committed: https://git.openstack.org/cgit/stackforge/os-ansible-deployment/commit/?id=e15512636018d946acb13c7605a315201a80d119
Submitter: Jenkins
Branch: juno

commit e15512636018d946acb13c7605a315201a80d119
Author: kevin <email address hidden>
Date: Mon Jul 20 18:48:59 2015 -0500

    Added openstack_kernel options for gc_thresh

    This commit adds to the openstack_kernel_options to set the
    "net.ipv4/6.neigh.default.gc_thresh*" values according to the set_gc_val
    which has a default value of 8192

    The changes here should provide for a more scalable neutron networking
    environment by default while also ensuring that the values computed are sane.
    Additionally, should the user want to define their own `set_gc_val` they can do
    so by simply overriding the `set_gc_val` variable.

    Change-Id: Ic5fd7ebdac009fa1472aeb0b0666f9b2611a31d7
    Closes-Bug: #1427893