updated to better focus deleting pgdata folder to version 4.16.09

tasks/main.yml

diff --git a/tasks/main.yml b/tasks/main.yml
index 770ea85..efb2ea5 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -13,4 +13,4 @@
   file:
     path: '{{ apigee_postgresql_data_dir }}'
     state: absent
-  when: clear_pgdata | default(False)
+  when: clear_pgdata | default(False) and opdk_version | version_compare('4.16.09', '==')