the sysctl command. Calling sysctl should also not be true by default

hostname module was lacking support for Scientific Linux, this commit adds it.

All modules should be using /usr/bin/python in the shebang as ansible_python_interpreter processes this (see FAQ).
Fixing for standardization purposes.

and add a sysctl_set parameter to manage the values in /proc

Adding support for detecting RHEV Hypervisor in ansible_virtualization_type

Also on update-rc.d
In service module

Revert "No longer need to reference 'version_added' in docs for these, as this was quite a while ago."

This reverts commit ff0a41d4.

On SLES, the setup module was returning the architecture as the distribution version (i.e. platform.dist() didn't quite return the right thing). This change checks for /etc/SuSE-release and grabs the second column in the third line as distribution_version.