Attempt at fixing test - remove escapes on IP dots.

playbooks/edx-east/set_hostname.yml

@@ -14,6 +14,6 @@
     - name: Update /etc/hosts
       lineinfile:
         dest: /etc/hosts
-        regexp: "^127\.0\.1\.1"
-        line: "127.0.1.1{{'\t'}}{{ hostname_fqdn.split('.')[0] }}{{'\t'}}{{ hostname_fqdn }}{{'\t'}}localhost"
+        regexp: "^127.0.1.1"
+        line: "127.0.1.1{{ '\t' }}{{ hostname_fqdn.split('.')[0] }}{{ '\t' }}{{ hostname_fqdn }}{{ '\t' }}localhost"
         state: present