* Generate code coverage report
Enable jacoco, the official Gradle code coverage plugin.
The 'build' task will write a code coverage report to
build/reports/jacoco for each subproject that has tests.
We should consider publish periodical reports to a well known
location.
This change also defines a minimum coverage verification task.
The task is for experiment only, and is not added to the build
process yet.
* Check dependencies' open-source licenses
Use jk1/Gradle-License-Report to verify that all
dependencies have open-source licenses.
Note that the following dependencies are not checked:
Dependencies of official Gradle plugins
Dependencies declared in buildscript block
Dependencies of jk1/Gradle-License-Report itself
Weimin YuandGitHub