Fix ansible-console always asking for vault passwords

[alikins]

SUMMARY

Fix ansible-console always asking for vault passwords

ansible-console was calling setup_vault_secrets
twice. Once directly and once via _play_prereqs()

The direct invocation was not setting auto_prompt=False.

However, the direct invocation isn't need at all so
this removes it so only _play_reqs() is used.
That fixes the unrequested vault password
prompting.

Fixes #33027

ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

lib/ansible/cli/console.py

ANSIBLE VERSION

ansible 2.6.0 (console_vault_auto_prompt_33027 c417dc547f) last updated 2018/02/15 11:07:35 (GMT -400)
  config file = None
  configured module search path = [u'/home/adrian/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /home/adrian/src/ansible/lib/ansible
  executable location = /home/adrian/src/ansible/bin/ansible
  python version = 2.7.14 (default, Jan 17 2018, 14:28:32) [GCC 7.2.1 20170915 (Red Hat 7.2.1-2)]

ADDITIONAL INFORMATION

Likely candidate for backporting to stable-2.4/stable-2.5