Fixed type in get_audit_template_by_name method
Fixed type in get_audit_template_by_name method

Removed an extra underscore in the
get_audit_template_by__name method name in
watcher/db/api.py

Change-Id: I2687858ff4510c626c4dd2e2e9a5701405b5da55
Closes-Bug: #1548765

stackforge/watcher,openstack/watcher,stackforge/watcher,openstack/watcher