updated file permissions and cleaned up string literals in python script.

library/cassandra_hosts.py

diff --git a/library/cassandra_hosts.py b/library/cassandra_hosts.py
index 7c0483f..a3b086f 100644
--- a/library/cassandra_hosts.py
+++ b/library/cassandra_hosts.py
@@ -86,7 +86,8 @@
 
     inventory_hostname = module.params['inventory_hostname']
     hostvars = module.params['hostvars']
-    with open('hostvars_params.json', 'w') as hostvars_file:
+    json_file_name = '/tmp/hostvars_params.json'
+    with open(json_file_name, 'w') as hostvars_file:
         hostvars_file.write(hostvars)
 
     # hostvars = hostvars.decode('base64')

tasks/main.yml

diff --git a/tasks/main.yml b/tasks/main.yml
index 25711d8..fcbb69b 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -1,6 +1,7 @@
 ---
 # tasks file for apigee-opdk-setup-silent-file
 - name: Remove the old response file
+  become: yes
   file:
     path: "{{ opdk_installation_config_file }}"
     state: absent
@@ -16,24 +17,26 @@
   when: "{{ groups['pgmaster'] is defined and groups['pgstandby'] is defined }}"
 
 - name: Construct the silent-install file
+  become: yes
   template:
     src: 'silent-install.conf.j2'
     dest: "{{ opdk_installation_config_file }}"
     force: yes
     owner: '{{ opdk_user_name }}'
     group: '{{ opdk_group_name }}'
-    mode: 0644
+    mode: 0655
   when: provided_response_file is not defined or not provided_response_file
   tags:
   - no-silent-install
 
 - name: Copy provided silent-install file
+  become: yes
   copy:
     src: "{{ provided_response_file }}"
     dest: "{{ opdk_installation_config_file }}"
     owner: '{{ opdk_user_name }}'
     group: '{{ opdk_group_name }}'
-    mode: 0644
+    mode: 0655
   when: provided_response_file is defined and provided_response_file
   tags:
   - no-silent-install