added disabling IPV6

tasks/main.yml

diff --git a/tasks/main.yml b/tasks/main.yml
index 472e29f..b9a6562 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -129,9 +129,11 @@
   - os_tuning
 
 - name: Disable Default IPV6
+  become: yes
   shell: "sysctl -w net.ipv6.conf.default.disable_ipv6=1"
 
 - name: Disable All IPV6
+  become: yes
   shell: "sysctl -w net.ipv6.conf.all.disable_ipv6=1"
 
 - name: Update for apigee installation environment