setup misc-web-lb to cache for blog.w.o server holmium

these changes should allow misc-web-lb.eqiad to serve ssl termination
for the blog server.  this change doesn't push blog settings over yet,
but is the first step for testing.

Change-Id: I1a3ede381d180e75effe715085563ce3f8272f69
RT: 5010
Merge "setup misc-web-lb to cache for blog.w.o server holmium" into production