Description of problem:
When syncing through a proxy using the digest_pw method of authentication in squid, sync fails with an access denied -- despite the proxy apparently working otherwise for other traffic.  

Note that ncsa auth method seems to be ok.

Version-Release number of selected component (if applicable):
Satellite-6.0.2-RHEL-6-20131101.0

How reproducible:


Steps to Reproduce:
1.  Configure a squid proxy using digest_pw auth

COMMENT OUT ("#") the following line in /etc/squid/squid.conf to assure we're not bypassing auth.

http_access allow localnet

ADD the following lines to /etc/squid/squid.conf in the access section

auth_param digest program /usr/lib64/squid/digest_pw_auth  -c /etc/squid/passwords
auth_param digest realm proxy
acl authenticated proxy_auth REQUIRED
http_access allow authenticated

EXECUTE the following
# htdigest -c /etc/squid/passwords proxy katello
(provide password for user 'katello' twice)

RESTART squid
# service squid restart
(if you want, assure your proxy works by pointing a browser to it - you should be forced to authenticate with katello/katello username/passwd

2. katello-configure --proxy-url http://yourproxy.example.com --proxy-port 3128 --proxy-user katello --proxy-pass katello
3.  Attempt to sync repo content

Actual results:

1383336473.313      0 10.16.96.134 TCP_DENIED/407 4254 GET http://dl.google.com/linux/chrome/rpm/stable/x86_64/repodata/repomd.xml - NONE/- text/html
1383336495.477      0 10.16.96.134 TCP_DENIED/407 4254 GET http://dl.google.com/linux/chrome/rpm/stable/x86_64/repodata/repomd.xml - NONE/- text/html


Expected results:

Successful sync

Additional info:

Here's an example of the same content working with an ncsa auth method in squid

1383336589.341     66 10.16.96.134 TCP_MISS/200 1543 GET http://dl.google.com/linux/chrome/rpm/stable/x86_64/repodata/repomd.xml katello DIRECT/74.125.226.229 application/xml
1383336589.424     36 10.16.96.134 TCP_MISS/200 1767 GET http://dl.google.com/linux/chrome/rpm/stable/x86_64/repodata/filelists.xml.gz katello DIRECT/74.125.226.229 application/xml
1383336589.448     58 10.16.96.134 TCP_MISS/200 1038 GET http://dl.google.com/linux/chrome/rpm/stable/x86_64/repodata/other.xml.gz katello DIRECT/74.125.226.229 application/xml
1383336589.451     61 10.16.96.134 TCP_MISS/200 2524 GET http://dl.google.com/linux/chrome/rpm/stable/x86_64/repodata/primary.xml.gz katello DIRECT/74.125.226.229 application/xml