New roles for smartcard server and client setup

There are new smartcard roles in the roles folder:

    roles/ipasmartcard_server
    roles/ipasmartcard_client

This roles allows to setup smartcard for servers and clients.

Here is the documentation for the roles:

    roles/ipasmartcard_server/README.md
    roles/ipasmartcard_client/README.md

New example playbooks have been added:

    playbooks/install-smartcard-server.yml
    playbooks/install-smartcard-replicas.yml
    playbooks/install-smartcard-servers.yml
    playbooks/install-smartcard-clients.yml