CI: Use any_errors_fatal in pre.yml and run.yml

This ensures that failure of a single host fails the whole play at that
task. This can avoid confusing errors such as when the task
"Assert that the nodepool private IPv4 address is assigned" fails on one
host, causing subsequent errors on other hosts.

Note that this only affects the Zuul playbooks, not Kolla Ansible's
playbooks.

Change-Id: I77a6534dd2ddd188f795e17d17a44be249d01f31

tests/pre.yml

@@ -1,5 +1,6 @@
 ---
 - hosts: all
+  any_errors_fatal: true
   vars:
     logs_dir: "/tmp/logs"
   tasks:

tests/run.yml

@@ -1,5 +1,6 @@
 ---
 - hosts: all
+  any_errors_fatal: true
   tasks:
     # NOTE(yoctozepto): ensure we pick up fact changes from pre
     - name: Refresh facts
@@ -28,6 +29,7 @@
         ceph_storetype: "{{ hostvars[inventory_hostname].get('ceph_osd_storetype') }}"
 
 - hosts: primary
+  any_errors_fatal: true
   tasks:
     - name: detect whether need build images
       set_fact:
@@ -252,6 +254,7 @@
 
 # NOTE(yoctozepto): each host checks itself
 - hosts: all
+  any_errors_fatal: true
   tasks:
     - name: Pre-upgrade sanity checks
       block:
@@ -277,6 +280,7 @@
       when: is_upgrade
 
 - hosts: primary
+  any_errors_fatal: true
   tasks:
     # Upgrade: update config.
     - block:
@@ -386,6 +390,7 @@
 
 # NOTE(yoctozepto): each host checks itself
 - hosts: all
+  any_errors_fatal: true
   tasks:
     - name: Run check-failure.sh script
       shell: