Remove extra ssh args passed to ansible

These are already set in the default ansible configuration file that is
generated with write_default_ansible_cfg() prior to running ansible,
and are thus redundant.

Change-Id: Ie756280c8b58354bef43cf92df1efb960ae4801d

workbooks/deployment.yaml

@@ -366,7 +366,6 @@ workflows:
           inventory: <% $.inventory %>
           playbook: <% $.get('work_dir') %>/<% execution().id %>/deploy_steps_playbook.yaml
           remote_user: tripleo-admin
-          ssh_extra_args: '-o StrictHostKeyChecking=no'
           ssh_private_key: <% $.private_key %>
           use_openstack_credentials: true
           verbosity: <% $.get('verbosity') %>

workbooks/octavia_post.yaml

@@ -108,8 +108,6 @@ workflows:
           become: true
           become_user: root
           ssh_private_key: <% $.private_key %>
-          ssh_common_args: '-o StrictHostKeyChecking=no'
-          ssh_extra_args: '-o UserKnownHostsFile=/dev/null'
           extra_env_variables: <% $.ansible_extra_env_variables %>
           extra_vars:
             os_password: <% $.overcloud_password %>

workbooks/swift_ring_rebalance.yaml

@@ -20,8 +20,6 @@ workflows:
           output: <% task().result %>
         input:
           ssh_private_key: <% task(get_private_key).result %>
-          ssh_common_args: '-o StrictHostKeyChecking=no'
-          ssh_extra_args: '-o UserKnownHostsFile=/dev/null'
           verbosity: 1
           remote_user: heat-admin
           become: true