Fix for MySQL on Rhel8 or Centos8

Signed-off-by: Chuck Levesque <clevesque@cloudera.com>

Author: clevesque

roles/prereqs/mysql_connector/tasks/main.yml

@@ -53,7 +53,7 @@
 # MySql on rhel8 fix
 - name: Fix MySQL on RHEL8
   when:
-    - ansible_distribution == "RedHat"
+    - ansible_os_family == "RedHat"
     - ansible_distribution_major_version == "8"
   block:
     - name: Remove mariadb packages if needed