Bump surefire plugin to 2.22.1 to avoid problem with Java 11 build.

5 jobs for master in 58 minutes and 16 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #10811
jars-j8

00:00:37

passed #10810
java8

00:17:18

 
  Test
passed #10813
allowed to fail
java11

00:13:10

passed #10812
java7

00:13:55

passed #10814
allowed to fail
maven36

00:13:15