Bug 1284498

Description of problem:
  When you setup the http_proxy + https_proxy and run the katello installer it fails. To be able to proceed, you have to 
  a) unset the http(s)_proxy variables
  b) add 127.0.0.1, localhost, $(hostname -f), all_other_satellite_IPs to the no_proxy variable.

However, that is not listed in the documentation. The culprit is the wget command when it is checking candlepin availability. My recommended solution is
to modify the documentation (user guide, BZ: 1282739). Or add the --no-proxy parameter, when the candlepin is running locally. 


Version-Release number of selected component (if applicable):
6.1.z

How reproducible:
Setup http(s)_proxy variables before you run katello-install 


Steps to Reproduce:
1. export http_proxy="http://some_proxy_ip:port"
   export https_proxy=$http_proxy
   in /etc/profile


2. re-login and run katello-install


Actual results:
/usr/bin/wget --timeout=30 --tries=40 --wait=20 --retry-connrefused -qO- http://localhost:8080/candlepin/admin/init >/var/log/candlepin/cpinit.log 2>&1 && touch /var/lib/candlepin/cpinit_done returned 8 instead of one of [0]
 /Stage[main]/Candlepin::Service/Exec[cpinit]/returns: change from notrun to 0 failed: /usr/bin/wget --timeout=30 --tries=40 --wait=20 --retry-connrefused -qO- http://localhost:8080/candlepin/admin/init >/var/log/candlepin/cpinit.log 2>&1 && touch /var/lib/candlepin/cpinit_done returned 8 instead of one of [0]


Setting the no_proxy variable to "localhost, 127.0.0.1, $(hostname -f), all_other_satellite_IPs"

will result into:
 /Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[sat_fqdn]: Could not evaluate: Could not load data from https://sat_fqdn


Expected results:
Either stop installation with error message that mentioned variables are set (system wide or just locally) or add support for it.