Add release checks

gradle/java-module.gradle

@@ -1,5 +1,6 @@
 apply from: JAVA_SCRIPT
 apply from: MAVEN_DEPLOYMENT_SCRIPT
+apply from: "$rootDir/gradle/release-checks.gradle"
 
 configurations {
     jacoco //Configuration Group used by Sonar to provide Code Coverage using JaCoCo

gradle/release-checks.gradle

@@ -0,0 +1,18 @@
+task checkDependencies << {
+    verifyNoDependenciesMatchingVersion(".*-SNAPSHOT")
+    if(releaseBuild) {
+        verifyNoDependenciesMatchingVersion(".*M.*")
+        verifyNoDependenciesMatchingVersion(".*RC.*")
+    }
+}
+
+if(!snapshotBuild) {
+    tasks.findByPath('check')?.dependsOn checkRepositories, checkDependencies
+}
+
+def verifyNoDependenciesMatchingVersion(def pattern) {
+    def dependencies = configurations.all*.allDependencies*.findAll { d -> d.version?.matches(pattern) }.flatten().toSet().join("\n    ")
+    if(dependencies) {
+        throw new GradleException("${project.name} cannot have dependencies with a version that matches $pattern when its version is ${project.version}. Got\n    $dependencies")
+    }
+}