Setup: ensure Apache SSO config is enabled

[dougburks]

Currently, if the user runs Setup and chooses to disable the Elastic stack, then the Apache SSO config is not enabled. This prevents the user from logging into Squert:
https://groups.google.com/d/topic/security-onion/zE9O36D1tJA/discussion

Solution: if the user chooses to disable the Elastic stack, then Setup should run:
so-elastic-configure-apache

[dougburks]

commit:
Security-Onion-Solutions/securityonion-setup@18d1ea2

[dougburks]

submitted for testing:
https://groups.google.com/d/topic/security-onion-testing/iNeNGFqIzgk/discussion

[dougburks]

published:
https://blog.securityonion.net/2018/11/securityonion-setup-20120912.html