Fix for issue 2017 (tools usage should disclose default value for options)

The changes include the required modifications to set the default values of the configuration file in the arguments.  The main modifications affect the classes LDAPConnectionConsoleInteraction and SecureConnectionCliArgs.  Most of the code in charge of reading the configuration has been moved to SecureConnectionCliArgs in order the arguments to be updated with those default values before the arguments are actually parsed.  This makes sense also since SecureConnectionCliArgs was already in charge of providing the trustmanager.  LDAPConnectionConsoleInteraction depends on SecureConnectionCliArgs but the latter does not rely on the former, so this change does not have a negative impact in terms of dependencies.