fix integration test coverage analysis in travis script

Author: sparkoo

.travis.yml

@@ -2,7 +2,7 @@ language: java
 jdk:
   - oraclejdk8
 sudo: false
-script: ./mvnw clean verify cobertura:cobertura-integration-tests
+script: ./mvnw clean verify cobertura:cobertura-integration-test
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)