3.2,4.2,5.2,6.2 Add needed software packages

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https://github.com/Shippable/pm/issues/8459

We have already installed ansible cli. Installing the following pakages, will help user to easily use the respective ansible modules. ( Ref: http://docs.ansible.com/ansible/list_of_cloud_modules.html )

AWS:

• https://pypi.python.org/pypi/boto

Google Cloud:

• https://libcloud.apache.org/

Azure:

• https://pypi.python.org/pypi/azure
• https://docs.microsoft.com/en-us/cli/azure/install-azure-cli

Dgitial Ocean:

• https://github.com/Wiredcraft/dopy
• https://www.digitalocean.com/community/tutorials/how-to-use-doctl-the-official-digitalocean-command-line-client

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