Allow User to Custom the Naming convention "{app_name}-{stage}-{func_name}" #1926
Description
I found there are many "%s-%s-%s" % (app_name, stage, func_name) in the code base. In my organization they force to use {stage}-{app_name}-{func_name}. Is it possible to create a package level CONSTANT variable in chalice/app.py like NAMING_CONVENTION = "{app_name}-{stage}-{func_name}" that allow user to monkey patch this using their own naming convention?
I found five occurrence of this code snippet, I think the refact is as easy as adding at most five variable and fix the import. If the community believe it is a good idea to allow user to change the naming convention, I can issue an PR. Thank you.