Feast Operator: Support Log Level Configuration in FeatureStore CR for Feature Services

[redhatHameed]

we need to add l og level configuration in FeatureStore CR, followed the requirements from https://github.com/feast-dev/feast/blob/master/sdk/python/feast/cli.py#L85, only allow values "debug", "info", "warning", "error", "critical".

spec:
  feastProject: test
  services:
    offlineStore:
      logLevel: debug
    onlineStore:
      logLevel: debug
    registry:
      local:
        logLevel: debug

optional, would add the following at service startup -

--log-level DEBUG

The --log-level parameter should be included in the Feast service deployment command only if it is explicitly configured in the (CR) by the user.
If logLevel is not specified in the CR, the deployment command should not include the --log-level parameter.

[redhatHameed]

@tchughesiv created the issue
Thanks