Copy-in redis certs via kolla extended/start
Copy-in redis certs via kolla extended/start

Instead of bind-mounting directly into the redis container,
follow the established approach for ditributing certificates
in containers.

Partial-bug: #1767998

Change-Id: Iff1a757c4893698ba550143d786088e5b9ffd714
Signed-off-by: Bogdan Dobrelya <a2228ae37d00d1cbd5a93e53f3e1e5aef21d5900@redhat.com>

dprince/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates