Fixes #6692

Closes #6169.

* Adds another module utility file which generalizes the
  access of urls via the urllib* libraries.
* Adds a new spec generator for common arguments.
* Makes the user-agent string configurable.

Fixes #6211

* Adds another module utility file which generalizes the
  access of urls via the urllib* libraries.
* Adds a new spec generator for common arguments.
* Makes the user-agent string configurable.

Fixes #6211

s/seperate/separate/

http://en.wiktionary.org/wiki/separate

Pipelining will be disabled by default, since it requires users remove
the 'requiretty' option from the servers sudoers configuration.

Lookup plugins do not warrant settings in ansible.cfg.

I get errors like this with etcd_url = 'http://127.0.0.1:4001':
urllib2.URLError: <urlopen error unknown url type: 'http>

with support for configurable etcd URL in ansible.cfg (and environment)

Using ANSIBLE_ROLE_PATH environment variable or role_path in ansible.cfg
can configure paths where roles will be searched for
extra paths will only be used as a backup once regular locations are exhausted

Also removing the ControlPath option, as it will now be auto-generated
if the ControlPersist option is set in the arguments.

Came to here from http://www.ansibleworks.com/docs/bestpractices.html, but I think the link here meant to go to https://github.com/ansible/ansible-examples and not https://github.com/ansible/ansible-examples/tree/master/language_features?

Make it possible to tell paramiko to not record new host keys, which can be slow with a large number of hosts.
-c ssh is preferred in most cases if you have ControlPersist available, otherwise if you are comfortable you
can turn off recording while leaving host key checking on, etc.

Makes host key checking the default behavior but can be disabled in ansible.cfg or by environment variable.

Updated the example ansible.cfg to be more consistent in spacing/commented lines

remote_user should not be set in example config. This file is used in rpm .spec for /etc/ansible/ansible.cfg

Previous commit made config invalid.