Add error level to VdalitaorConfiguration

[takahi-i]

Ref #643

[coveralls]

Coverage increased (+0.02%) to 91.026% when pulling 0e59e06 on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage increased (+0.02%) to 91.026% when pulling d67180c on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage increased (+0.03%) to 91.044% when pulling 8c0e9f1 on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage increased (+0.01%) to 91.022% when pulling b4e1fa8 on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage decreased (-0.03%) to 90.982% when pulling 3da06e3 on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage decreased (-0.03%) to 90.982% when pulling a75493e on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage decreased (-0.03%) to 90.982% when pulling bea6f58 on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage decreased (-0.02%) to 90.989% when pulling d143d57 on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage decreased (-0.02%) to 90.993% when pulling 5c93b33 on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage decreased (-0.02%) to 90.993% when pulling d7ea419 on takahi-i:add-severity into f63cc62 on redpen-cc:master.

[coveralls]

Coverage decreased (-0.02%) to 90.993% when pulling 40b5719 on takahi-i:add-severity into f63cc62 on redpen-cc:master.