fix: replace 1 bare except clause with except Exception

Author: haosenwang1018

awscli/customizations/ec2/addcount.py

@@ -90,7 +90,7 @@ def add_to_params(self, parameters, value):
                 minstr, maxstr = (value, value)
             parameters['MinCount'] = int(minstr)
             parameters['MaxCount'] = int(maxstr)
-        except:
+        except Exception:
             msg = ('count parameter should be of '
                    'form min[:max] (e.g. 1 or 1:10)')
             raise ValueError(msg)