Update SSH PAM tutorial to include new features. (#676)
Update SSH PAM tutorial to include new features. (#676)

Tutorial now uses display and pull policies to request authorization context.
Separate policies for sudo and SSH have been merged into one for simplicity.

Signed-off-by: Yash Tewari <a2a03522fb627f354054c8a2499b9654a8bdd7e8@gmail.com>
tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa,tsandall/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa