Bug 907742 Use 'localhost' exclusively for local port forwarding.

[BanzaiMan]

This should fix bug 907742. The behavior change is large enough,
however, that existing documents should be revised.

[BanzaiMan]

[test]

[openshift-bot]

Test Results: SUCCESS (https://ci.dev.openshift.redhat.com/jenkins/job/test_pull_requests/988/)

[openshift-bot]

Origin Test Results: Running (https://originci-openshift.rhcloud.com/job/test_pull_requests/62/)

[BanzaiMan]

I set up an Windows VM to get verify that it works on that platform:

C:\Users\IEUser\DOCUME~1\GitHub\rhc>bundle exec ruby .\bin\rhc port-forward foo
The source :rubygems is deprecated because HTTP requests are insecure.
Please change your source to 'https://rubygems.org' if possible, or 'http://ruby
gems.org' if not.
Password: ************
Checking available ports...
Forwarding ports
  Service Connect to          Forward to
  ====== ============== ==== ================
  httpd  localhost:8080  =>  127.10.28.1:8080
  mysqld localhost:3306  =>  127.10.28.1:3306
Press CTRL-C to terminate port forwarding

The attached image shows the MySQL connection made to localhost's port 3306.

[smarterclayton]

Reviewed, [merge]

[openshift-bot]

Merge Test Results: SUCCESS (https://ci.dev.openshift.redhat.com/jenkins/job/merge_pull_requests/1815/) (Image: devenv_2848)

[smarterclayton]

[merge]

[openshift-bot]

Evaluated up to 5beaa18