[FR] Allow specifying Azure Redis max memory policy

[claassen]

Is your feature request related to a problem? Please describe.
Would like to be able to specify the max memory policy (e.g. allkeys-lru, noeviction) when creating Azure Redis service instances

Describe the solution you'd like
cf create-service csb-azure-redis small my-redis -c '{"maxmemory_policy": "value"}'

Describe alternatives you've considered
N/A

Priority
Low

Platform
Azure

Applicable Services
Redis

[claassen]

Implemented by #73

[erniebilling]

Fixed