Force Ansible to use dynamic includes

Ansible 2.1.1 introduces a regression in the way conditional
includes are handled which results in every task in the
included file being evaluated even if the condition for the
include is not met. This extends the run time significantly
for a deployment.

This patch forces all conditional includes to be dynamic.

Change-Id: Icfa54ea0e954c751759e0d750fc3d6bd25626e70
Related-Bug: https://github.com/ansible/ansible/issues/17687

tasks/main.yml

@@ -43,6 +43,7 @@
     - openstack_hosts-config
 
 - include: openstack_update_hosts_file.yml
+  static: no
   when: openstack_host_manage_hosts_file | bool
   tags:
     - openstack_hosts-install

tasks/openstack_host_install.yml

@@ -14,9 +14,11 @@
 # limitations under the License.
 
 - include: openstack_host_install_apt.yml
+  static: no
   when:
     - ansible_pkg_mgr == 'apt'
 
 - include: openstack_host_install_yum.yml
+  static: no
   when:
     - ansible_pkg_mgr == 'yum'