Revert "all cql statements end with semi-colon"

This reverts commit c18afa3d874ce800ce9a602d294ab36ee37caada.

Conflicts:
	otter/models/cass.py

Also changed all the tests expecting semi-colon based statements
fixed create_scaling_group

create_scaling_group was failing due to False put in "groupTouched" column. Removed it from create cql
statement which stores it as None as originally intended