Description of problem:
Create HA app on a multinode env. Add the node ip of the 2nd haproxy gear to /etc/hosts with the app dns.

When trying to visit the app dns, it will return 404 page. The app dns was not registered to the node frontend.

Version-Release number of selected component (if applicable):
devenv_5281

How reproducible:
always

Steps to Reproduce:
1. Setup multinode env
2. Create Scalable app on it and make it HA
3. Add the node ip of the 2nd haproxy gear and app dns to /etc/hosts
4. Visit the app dns.

Actual results:
It will return 404 page.

Expected results:
Should show the app home page when visiting the app dns which point to the 2nd haproxy gear's node.

Additional info:
Visit the app alias will not hit this problem.

# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6


54.81.35.75 php541s-bmengdevnew.dev.rhcloud.com foo.bmeng.com

# curl -Ik https://php541s-bmengdevnew.dev.rhcloud.com/
HTTP/1.1 404 Not Found
Date: Thu, 06 Nov 2014 15:39:55 GMT
Server: Apache/2.2.15 (Red Hat)
Vary: Accept-Encoding
Content-Type: text/html; charset=iso-8859-1

# curl -Ik https://foo.bmeng.com/
HTTP/1.1 200 OK
Date: Thu, 06 Nov 2014 15:40:21 GMT
Server: Apache/2.2.15 (Red Hat)
Content-Type: text/html; charset=UTF-8
Cache-control: private
Set-Cookie: GEAR=local-545b8bc7e4364b0094000004; path=/
Vary: Accept-Encoding
Accept-Ranges: none
ProxyTime: D=1307