Remove deadcode from neutron.common.utils

[Bogdan Tabor]

neutron.common.utils contains methods not used anywhere withing neutron projects:

neutron/neutron/common/utils.py:def read_cached_file(filename, cache_info, reload_func=None):
neutron/neutron/common/utils.py:def find_config_file(options, config_file):
neutron/neutron/common/utils.py:def get_keystone_url(conf):

Remove them all.

Information on how to reproduce the fault is in attachements.

[Ihar Hrachyshka (ihar-hrachyshka)]

Note they may be used in external repos. So deprecation period is justified.

[Bogdan Tabor (bogdan-tabor)]

What external repos?
I checked:

neutron
neutron-fwaas
neutron-lbaas
neutron-lbaas-dashboard
neutron-specs
neutron-vpnaas
puppet-neutron
python-neutronclient
python-neutron-pd-driver

What else do I need to check?

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/238086

[Kevin Benton (kevinbenton)]

This needs to go through deprecation. These could be used by any of the tons of drivers/plugins/services that vendors and operators could be running.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/238086
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=8022adb7342b09886f53c91c12d0b37986fbf35c
Submitter: Jenkins
Branch: master

commit 8022adb7342b09886f53c91c12d0b37986fbf35c
Author: Bogdan Tabor <email address hidden>
Date: Wed Oct 21 15:40:14 2015 +0200

    Mark for removal deadcode in neutron.common.utils

    Methods:
     * read_cached_file(filename, cache_info, reload_func=None)
     * find_config_file(options, config_file)
     * get_keystone_url(conf)
    are not used withing neutron projects.

    Change-Id: Iba3325103f5c24c1822781382f4c8864eb2921c5
    Closes-bug: #1508430