fix pagination on call detail report
Update version v2.11.8
Merge branch 'release/v2.11.8' into develop
fix pagination on subscriber page
change indent
release condition on survey report to display campaign that has been started
update celery requirements + call_event traceback inside try close
use eta instead of countdown to spread call task
update lua connection mechanism to handle better connection error
update kombu version in requirements
display Phonebook and Frequency on listing campaign