Fix non-existing log method in HarbormasterManagementRestartWorkflow

Summary: In HarbormasterManagementRestartWorkflow, logSkip() is called. A method with such a name has never existed in PhabricatorManagementWorkflow. Given the five available log*() methods, replace the call with logInfo() which seems most appropriate.

Test Plan: Run static code analysis which complains about Call to an undefined method HarbormasterManagementRestartWorkflow::logSkip(); read the code.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Tags: #almanac_drydock_harbormaster

Differential Revision: https://we.phorge.it/D25742