sysutils/ansible1: Switch to paramiko (2.x)

Follow up of ports r445996. This was missed due to seperate original commits
[1][2] with no PR: references and insufficient QA on my part which would have
picked it up.

This fixes the second packaging error after ports r445866 due to conflicting
paramiko1/paramiko ports, because of:

• sysutils/py-ploy_fabric -> sysutils/py_ploy -> security/paramiko
• sysutils/py-ploy_fabric -> devel/py-fabric -> security/paramiko1 (r445866)
• sysutils/bsdploy -> sysutils/ansible1 -> security/py-paramiko1 (this fix)
  
  [1] https://svnweb.freebsd.org/changeset/ports/425687 [2] https://svnweb.freebsd.org/changeset/ports/425989

PR: 214379