chore(logging): fix log level

[akosveres]

• Fix log levels across multiple log lines
• Add missing log lines
• Adjust log levels
• Update docs
• This addresses issue Logging verbosity and options #50

[sorccu]

For future reference, would it be possible for you to briefly describe the differences between the two loggers that seem to be used (logr and zap)?

And related to that, is it enough to be able to set zap's log level via the CLI option, but not have it affect logr's level at all?

[akosveres]

For future reference, would it be possible for you to briefly describe the differences between the two loggers that seem to be used (logr and zap)?

And related to that, is it enough to be able to set zap's log level via the CLI option, but not have it affect logr's level at all?

Here's an explanation from the operator-sdk, which we're using to setup the project, https://sdk.operatorframework.io/docs/building-operators/golang/references/logging/ - Does this help?