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
<openshift.ks> - Ensure /sbin and /usr/sbin are in PATH

https://bugzilla.redhat.com/show_bug.cgi?id=1163338
Merge pull request #500 from detiber/bz1163338-2

<openshift.ks> - Ensure /sbin and /usr/sbin are in PATH
<oo-install> backport latest oo-install changes

Addresses the following bugs:
- https://bugzilla.redhat.com/show_bug.cgi?id=1162422
- https://bugzilla.redhat.com/show_bug.cgi?id=1163036
- https://bugzilla.redhat.com/show_bug.cgi?id=1163338
Merge pull request #503 from detiber/enterprise-2.2

<oo-install> backport latest oo-install changes
Bug 1146694 <openshift.sh> - respect $TMPDIR setting

https://bugzilla.redhat.com/show_bug.cgi?id=1146694

- if $TMPDIR is set respect it, instead of hardcoding /tmp