Update Library of Example Scripts

[sserrata]

• Palo Alto Networks Cloud Python SDK version: 1.0.2
• Python version: 2.7.x, 3.5.x, 3.6.x
• Operating System: All

Description

• Update existing example scripts to according to recent API changes.
• Add additional example scripts as needed.

[sserrata]

Update

• Planning to include updated scripts in #23 so that they implement new Credentials object.