#1007 - Reenable spring-next testing profile.

Now that Spring HATEAOS is based on Spring Framework 5.2.0.M3, which has upgraded it's handling of charset variables in web responses, we can go back to also testing against Spring Framework 5.2.0.BUILD-SNAPSHOT.

Jenkinsfile

@@ -62,6 +62,39 @@ pipeline {
 						sh "PROFILE=none ci/test.sh"
 					}
 				}
+				stage("test: spring-next (jdk8)") {
+					agent {
+						docker {
+							image 'adoptopenjdk/openjdk8:latest'
+							args '-v $HOME/.m2:/root/.m2'
+						}
+					}
+					steps {
+						sh "PROFILE=spring-next ci/test.sh"
+					}
+				}
+				stage("test: spring-next (jdk11)") {
+					agent {
+						docker {
+							image 'adoptopenjdk/openjdk11:latest'
+							args '-v $HOME/.m2:/root/.m2'
+						}
+					}
+					steps {
+						sh "PROFILE=spring-next ci/test.sh"
+					}
+				}
+				stage("test: spring-next (jdk12)") {
+					agent {
+						docker {
+							image 'adoptopenjdk/openjdk12:latest'
+							args '-v $HOME/.m2:/root/.m2'
+						}
+					}
+					steps {
+						sh "PROFILE=spring-next ci/test.sh"
+					}
+				}
 			}
 		}