Update watch.py to check for pre 16.1 versions
Update watch.py to check for pre 16.1 versions

cli-refresh is not supported pre 16.1.  
- Implemented version check to prevent running the invalid "disable cli refresh" command on pre 16.1 versions.  
- Added a warning message regarding auto-refreshing commands for pre 16.1 versions
extremenetworks/xkit,extremenetworks/xkit,extremenetworks/xkit,extremenetworks/xkit