MT#11147 use default DB account to clear test data from DB

Change-Id: I85b7a2f21930ccf03bafc617fb6f5c423a1a61ed

t/api-pbxdevicemodels.t

@@ -98,7 +98,7 @@ foreach my $type(qw/extension phone/){
     }
 }
 #pbxdevicemodels doesn't have DELETE method
-`echo 'delete from autoprov_devices where model like "%api_test %" or model like "patched model%";'|mysql provisioning`;
+`echo 'delete from autoprov_devices where model like "%api_test %" or model like "patched model%";'|mysql -u root provisioning`;
 done_testing;
 
 # vim: set tabstop=4 expandtab: