Description of problem:

Run a playbook with openshift_certificate_expiry role to check certs with json report generated, the report's summary part has only expired&warning numbers but not total numbers and 'ok' numbers. It is not convenient for user to catch the check result.

<--snip-->
"summary": {
    "expired": 0,
    "warning": 0
  }
<--snip-->

So QE suggested to add them to help user quickly know how many certs have been checked just like what is be output in html report:

Checked 14 total certificates. Expired/Warning/OK: 0/0/14. Warning window: 30 days 

Version-Release number of selected component (if applicable):
openshift-ansible-roles-3.4.12-1.git.0.0b5efd2.el7.noarch


How reproducible:
always

Steps to Reproduce:
1.Wrote a playbook to run role openshift_certificate_expiry.
cat playbook.yml
---
- name: Check cert expirys
  hosts: all
  become: yes
  gather_facts: no
  vars:
    openshift_certificate_expiry_show_all: yes
    openshift_certificate_expiry_generate_html_report: yes
    openshift_certificate_expiry_save_json_results: yes
  roles:
    - role: openshift_certificate_expiry

2.It will generate html and json report in default directory.

Actual results:
<--snip-->
"summary": {
    "expired": 0,
    "warning": 0
  }
<--snip-->

Expected results:
Json report should include total/ok number like following:
<--snip-->
"summary": {
    "total": 14
    "expired": 0,
    "warning": 0,
    "ok":14
  }
<--snip-->

Additional info: