add pre-flight checks to ugrade path

playbooks/common/openshift-cluster/upgrades/init.yml

@@ -23,3 +23,5 @@
     set_fact:
       os_firewall_use_firewalld: false
     when: "'Active: active' in service_iptables_status.stdout"
+
+- include: ./pre/verify_memory_and_diskspace.yml

playbooks/common/openshift-cluster/upgrades/pre/verify_health_checks.yml

@@ -0,0 +1,13 @@
+---
+- name: Verify Host Requirements
+  hosts: oo_all_hosts
+  roles:
+  - openshift_health_checker
+  vars:
+  - r_openshift_health_checker_playbook_context: "upgrade"
+  post_tasks:
+  - action: openshift_health_check
+    args:
+      checks:
+      - disk_availability
+      - memory_availability

roles/openshift_health_checker/callback_plugins/zz_failure_summary.py

@@ -95,7 +95,7 @@ def _print_check_failure_summary(self, failed_checks, context):
             'Variables can be set in the inventory or passed on the\n'
             'command line using the -e flag to ansible-playbook.\n'
         ).format(playbook=self._playbook_file, checks=checks)
-        if context in ['pre-install', 'health']:
+        if context in ['pre-install', 'upgrade', 'health']:
             summary = (
                 '\n'
                 'You may choose to configure or disable failing checks by\n'