Revert "Append EXTRA_ADMIN_NETWORKS to dnsmasq.template"

[OpenStack Infra]

https://review.openstack.org/238924
commit ed5dbce3cf54985f15739c2d7a357eacce28a8be
Author: Nikita Koshikov <email address hidden>
Date: Fri Oct 23 16:12:53 2015 +0300

    Revert "Append EXTRA_ADMIN_NETWORKS to dnsmasq.template"

    This reverts commit 5787af40904d6e209777f936550f06b6930ffb57.
    And also removes parameter 'extra_admin_nets' from unit tests.

    We're implementing automatic configuration of DHCP ranges in
    dnsmasq so this workaround is no longer needed.

    Co-Authored-By: Aleksandr Didenko <email address hidden>

    DocImpact: we should remove documentation about manual update
    of dnsmasq.template file here:
    https://docs.mirantis.com/openstack/fuel/fuel-7.0/operations.html#configuring-multiple-cluster-networks

    Change-Id: Idd4d6051d5b4aeba504920126e697135c683a78b
    Blueprint: dynamic-dnsmasq

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/241220

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/241220
Committed: https://git.openstack.org/cgit/openstack/fuel-docs/commit/?id=ce318e857e597a63c0f0457f9267f0d9ccbfe1a1
Submitter: Jenkins
Branch: master

commit ce318e857e597a63c0f0457f9267f0d9ccbfe1a1
Author: OlgaGusarenko <email address hidden>
Date: Tue Nov 3 16:24:54 2015 +0200

    [Docs] dnsmasq.template fix

    1. Removes documentation about manual update of the dnsmasq.template
       file from the Operations guide.
    2. Removes the file description from the File reference guide as it
       is autogenerated.

    Change-Id: I76bd8b0b2929e447ca61fbdcdb1d7419c2c1a98a
    Closes-Bug: #1512342