Make kafka version configurable (#5046)

diff --git a/ansible/group_vars/all b/ansible/group_vars/all
index 84b6b02..006d158 100644
--- a/ansible/group_vars/all
+++ b/ansible/group_vars/all
@@ -151,7 +151,7 @@
     protocols:
     - TLSv1.2
   protocol: "{{ kafka_protocol_for_setup }}"
-  version: 2.12-2.3.1
+  version: "{{ kafka_version | default('2.13-2.7.0') }}"
   port: 9072
   advertisedPort: 9093
   ras: