edit surefire configuration

[ChenZhangg]

#161
The log says

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M4:test (default-test) on project jacoco: Use useUnlimitedThreads=true, or only threadCount > 0, or (threadCountSuites > 0 and threadCountClasses > 0 and threadCountMethods > 0), or every thread-count is specified, or (threadCount > 0 and threadCountSuites > 0 and threadCountClasses > 0 and threadCount > threadCountSuites + threadCountClasses) for parallel='all' -> [Help 1]

So I will add some surefire configurations.