enable seo redirects in core.php

Summary:
WEB-364 #fixed
enable seo redirects in core.php

Test Plan: test on stage now that SEO redirects is landed in the main repos

Reviewers: #everyone, gwarner

Reviewed By: #everyone, gwarner

Differential Revision: https://dev.blendtec.com/D1598
Use different memcache servers for sessions and data

Summary:
Actually pull the right variable

Try a sleep command

Log the sleep

Merge branch 'develop' into different-mems

Test Plan: already one stage

Reviewers: #everyone, mclawson

Reviewed By: #everyone, mclawson

Subscribers: mclawson

Differential Revision: https://dev.blendtec.com/D1603
Remove sleep