Redis datasource NetworkPolicy Additions

• An ingress was added to allow the grafana/redis datasource access
• Gitlab, by default, uses a random-generated password for access to the redis server. These changes allow the password to be set at the bigbang level and passed by a secret to the grafana/redis data source. I think we could also just disable password access to the redis server, but these changes allow us to keep the current behavior.

Pull in these changes if you test: https://repo1.dso.mil/platform-one/big-bang/bigbang/-/merge_requests/1403

for https://repo1.dso.mil/platform-one/big-bang/apps/application-utilities/redis/-/issues/7