* Update plugins/hooks from branch 'stable-2.16'
to 47e4b87fca52c5b1dea9ab37833e36fb4f57d3fb
- Fix source glob in test rule
The glob was only matching files with the name *Test.java which did not
include HooksIT.java, hence the test was not being executed when run on
the command line with "bazel test".
Change-Id: If593ad52c24ddd1f633a399f59204fa2a48b0359