vagrant error in cryptography setup command

[csantanapr]

Environment details:

• vagrant
• MacOS

Steps to reproduce the issue:

1. Follow steps in README https://github.com/apache/incubator-openwhisk#quick-start

# Clone openwhisk
git clone --depth=1 https://github.com/apache/incubator-openwhisk.git openwhisk

# Change directory to tools/vagrant
cd openwhisk/tools/vagrant

# Run script to create vm and run hello action
./hello

2. Walk outside smell the roses and have a coffee

Provide the expected results and outputs:

wsk action invoke /whisk.system/utils/echo -p message hello --result
{
    "message": "hello"
}

Provide the actual results and outputs:

==> default:     warning: no previously-included files found matching '.travis/install.sh'
==> default:     warning: no previously-included files found matching '.travis/run.sh'
==> default:     warning: no previously-included files found matching '.coveragerc'
==> default:     warning: no previously-included files found matching 'tasks.py'
==> default: Downloading/unpacking cryptography>=1.5 (from paramiko->ansible==2.3.0.0)
==> default:   Running setup.py (path:/tmp/pip_build_root/cryptography/setup.py) egg_info for package cryptography
==> default:     error in cryptography setup command: Invalid environment marker: python_version < '3'
==> default:     Complete output from command python setup.py egg_info:
==> default:     error in cryptography setup command: Invalid environment marker: python_version < '3'
==> default:
==> default: ----------------------------------------
==> default: Cleaning up...
==> default: Command python setup.py egg_info failed with error code 1 in /tmp/pip_build_root/cryptography
==> default: Storing debug log for failure in /home/vagrant/.pip/pip.log

Additional information you deem important:

• Google error and found out fix is to sudo pip install --upgrade setuptools from error in cryptography setup command: Invalid environment marker: python_version < '3' ansible/ansible#31741

Related to PR #2891