heap initial and max sizes should be the same

playbooks/roles/neo4j/tasks/main.yml

@@ -65,8 +65,11 @@
 - name: set neo4j heap size
   lineinfile:
     dest: "{{ neo4j_server_config_file }}"
-    regexp: "dbms.memory.heap.max_size="
-    line: "dbms.memory.heap.max_size={{ neo4j_heap_max_size }}"
+    regexp: "{{ item }}="
+    line: "{{ item }}={{ neo4j_heap_max_size }}"
+  with_items:
+    - "dbms.memory.heap.max_size"
+    - "dbms.memory.heap.initial_size"
   tags:
     - install
     - install:configuration