Description of problem:
API calls does not work through RHN Proxy 5.4.1 installed in RHEL6

Version-Release number of selected component (if applicable):
RHN Proxy 5.4.1
RHEAL 6.1

How reproducible:
Alwasy


Steps to Reproduce:
1. Install  RHN Proxy 5.4.1 on RHEL6 activated to SATELLITE 5.4
2. Register a SERVER to the Proxy
3. On that SERVER execute:
  export SAT_SERVER="SATELLITE"
  python -c "import xmlrpclib,os;\
        SERVER = os.environ['SAT_SERVER'];\
        client = xmlrpclib.Server('http://%s/rpc/api' % SERVER, verbose=0);\
        print client.api.systemVersion()" 
  
Actual results:
  Traceback (most recent call last):
  File "<string>", line 1, in ?
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1096, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1383, in __request
    verbose=self.__verbose
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1137, in request
    headers
xmlrpclib.ProtocolError: <ProtocolError for hp-bl495cg5-01.rhts.bos.redhat.com/rpc/api: 404 Not Found>


Logs on RHN PROXY.
###  /var/log/httpd/access_log   ##########################################
10.16.64.151 - - [14/Apr/2011:05:37:22 -0400] "POST /rpc/api HTTP/1.0" 404 306 "-" "xmlrpclib.py/1.0.1 (by www.pythonware.com)"

###  /var/log/httpd/error_log   ##########################################
[Thu Apr 14 05:37:22 2011] [error] [client 10.16.64.151] File does not exist: /var/www/html/rpc

Expected results:
Success.

Additional info: