Why:

* There is a lack of control over logging and a lack of convention for
  our Security Analyzers. See
  gitlab-org/gitlab#10880 for more context.

This change addresses the need by:

* Upgrade version of common used.
* Set logrus formatter with common's logutil package.
* Replace log/fmt print calls with the appropriate logrus calls.
* Add info logs when executing large steps.
* Add debug log for exec output.