fix(W-17704930): set ignoreStdin to true for redis:cli database arg

[k80bowman]

W-17704930

Resolves #3186

Sets the database arg to ignore stdin in order to allow a user to pipe commands through to their redis instance.

Testing

1. Check out this branch and run yarn && yarn build
2. Run heroku addons:create heroku-redis:mini -a TEST_APP to install a redis instance. Wait for the addon to be provisioned.
3. Run echo "test" | ./bin/run redis:cli -a TEST_APP and verify that you see a message that the CLI is connecting to your redis instance, the word "test" is printed, and then you get an error about the "unknown command 'test'", and then the connection closes. You should not see an "Unexpected argument" error or a "No Redis instances found error and the connection should close and not remain open.