install: fix all-in-one httpd conf

Change the workaround for node obscuring broker vhosts in allin1.

Bug 1116713 - node httpd conf intercepts requests for the broker in
all-in-one env
https://bugzilla.redhat.com/show_bug.cgi?id=1116713
Merge pull request #501 from sosiouxme/2.2-httpd-conf-bz1116713

install: fix all-in-one httpd conf