Redis dep update to version 14.1.0-bb.6 & redis-bb commonConfiguration value addition

• Updating redis sub-chart to version 14.1.0-bb.6 to incorporate prometheusRule values in new version.
• Adding commonConfiguration template to set maxmemory for instance so we get reliable memory alerts from prometheus.

Relates https://repo1.dso.mil/platform-one/big-bang/apps/application-utilities/redis/-/issues/8