Add Default Logging and Redactions of Logs

[alzimmermsft]

Add a default, always-on, logger and enhance logging to redact sensitive information (secrets, passwords, etc) from the logs.

[amishra-dev]

@alzimmermsft In addition to redacting, we also must implement that if a task is running for more than 2 seconds we write the CPU/Memory (Disk and network if we can) into the default log.
@rickle-msft fyi

[joshfree]

@samvaity could you please drive this to resolution for Preview 5?

[rickle-msft]

I'm not sure if I've shared this elsewhere, but we'd really like to get the items discussed in #5130 included in whichever PR related to logs comes out next

[rickle-msft]

Another customer request is to log which retry number we are on. See here

[JonathanGiles]

@samvaity Can this issue be closed (for redaction), with the follow-up requests filed in new issues that are not considered release blocking?

[samvaity]

Closing this as the redaction of sensitive information from logs is already merged in #5688

New issues filed for the other two logging improvements: #5773, #5774