Redis flushdb

[john-westcott-iv]

2 commits in here:

1. Simplifying how exceptions are handled with a raised translated message. This allows us to catch other exceptions we weren't expecting and exiting with clean errors.
2. Overriding the flushdb method. Currently, in our version of Redis, the flushdb command does not respect ACLs. So when gateway switches from the fallback cache to the primary cache it calls cache.clear() this eventually does a flushdb command. The flushdb command will not check the connected users to see if they have access to keys, it just obliterates everything in the Redis DB. This causes issues in a shared Redis installation. This new method is less efficient but will load all of the keys and then attempt to delete them all and just ignores a NoPermissionError if it tried to delete something it didn't have access to.

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
97.5% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[bhavenst]

Looks good! I don't see anything to comment on. Ran all the unit tests as well with no issues locally.