Translate '0.0.0.0/0' to '0.0.0.0' when allowing IP
access with the ganesha driver since the ganesha back end
cannot handle the former expression and the latter has
the desired effect of allowing access to all IPs.
Depends-on: https://review.openstack.org/#/c/626879/
Closes-bug: #1800627
Change-Id: Ica698b6a70a128522c2c2de76a69e59207fd60ac
(cherry picked from commit 67f2f61395158008381229479377f67322fab11a)
(cherry picked from commit a65c2b09746fe95d31c102d99c8e7674cddc82be)
40792c69a7