Refactoring: Rename logging method

Rename maybeLogPasswordComplexitySet to
logPasswordQualitySetIfSecurityLogEnabled because:
* It logs password quality, not password complexity (password quality
  being the deprecated way to set password requirements, complexity
  being the new way).
* "maybe" in the method name is less informative than
  "IfSecurityLogEnabled".

Bug: 165573442
Test: That it compiles
Change-Id: I8f900fd27d3b1412f0de0bf199b263ae3c29102b