Change in the syntax of log rotate command.
Previously it was : volume log rotate <volname> [<brick>]
Changed to : volume log <volname> rotate [<brick>]
To maintain uniformity with other commands.
Uniform syntax: volume <verb|noun> <volname> [<actions>|options]
Result (if any): Change in cli syntax for user.
NOTE: Old syntax will also work but will be deprecated after one release.