Remove redundant print

@@ -130,12 +130,18 @@ class EMRClusterScanner(object):
             while retry > 0:
                 print cmd
                 output = os.popen(cmd).read()
-                if 'changed=1' not in output or 'unreachable=1' in output:
+                if 'unreachable=1' in output or 'failed=1' in output or 'changed=1' not in output:
+                    with open('/var/log/supervisor/ansible.err','a') as f:
+                        f.write(output+'\n\n')
+                        f.close()
                     retry-=1
                     print "重新同步DNS...还剩{0}次".format(retry)
                     time.sleep(300)
                     continue
                 else:
+                    with open('/var/log/supervisor/ansible.log','a') as f:
+                        f.write(output+'\n\n')
+                        f.close()
                     print "DNS 同步成功"
                     return True
             return False