Support Vault #182

Create a service like metrics or requests to support vault Vault https://www.vaultproject.io/

How-to:

• Read the tutorial How to create services
• Add new dependencies in setup.py
• Create the service

Challenge:
Try to pass the configuration from configuration file to VAULT initialization, in example

pyms:
  services:
    vault:
      [host/url]: "[localhost|192.168....]"