Use realpath to canonicalize command paths in dzdo

Specify whether dzdo uses command paths resolved by realpath when searching for commands.

If you set this group policy to Not configured or Disabled, realpath is not used to resolve command paths. If you set this group policy to Enabled, realpath is used to expand all symbolic links and resolve references to:

/./
/../ 
extra / characters

This group policy modifies the dzdo.use.realpath setting in the agent configuration file.