Change 'sudo' to 'become' to match top-level playbook.

handlers/main.yml

@@ -1,5 +1,5 @@
 ---
 - name: "Restart gearman"
   service: "name=gearman-job-server state=restarted"
-  sudo: yes
+  become: yes
   ignore_errors: yes

tasks/main.yml

@@ -1,21 +1,21 @@
 ---
 - name: "Install gearman packages"
   apt: "pkg=gearman state=present update_cache=yes cache_valid_time=3600"
-  sudo: yes
+  become: yes
 
 - name: "Populate gearman defaults"
   template: "src=etc/default/gearman-job-server dest=/etc/default/gearman-job-server owner=root group=root"
   notify:
     - "Restart gearman"
-  sudo: yes
+  become: yes
 
 - name: "Ensure that gearman is enabled"
   service: "name=gearman-job-server enabled=yes"
-  sudo: yes
+  become: yes
 
 - name: "Ensure that gearman is running"
   service: "name=gearman-job-server state=started"
-  sudo: yes
+  become: yes
 
 - name: "Flush handlers"
   meta: flush_handlers