Improve Impala shell usability by enabling live_progress in interactive mode

Improve Impala shell usability by enabling live_progress in the interactive mode. In the interactive mode, a user can disable live_progress by either using the command line flag or setting the option as False in
the config file. As for in the non-interactive mode (when the -q or -f options are used), live reporting is not supported. Impala-shell will disable live_progress if the mode is detected.