[BEAM-11383] Add runtime normalization for sdk.properties. (apache#13464

)

This normalizes the sdk.properties file which has a build timestamp in it as well as the version and sdk version. For the purposes of the runtime classpath, these can be ignored so that tasks are not rerun if only the build timestamp is changed.
This should result in significantly higher cache hits as well as more up-to-date checks.

This also preserves timestamps for certain tasks for the same reason.

BEAM-11383

build.gradle

@@ -376,8 +376,17 @@ if (project.hasProperty('compileAndRunTestsWithJava11')) {
   project.sqlPreCommit.dependsOn ':sdks:java:testing:test-utils:verifyJavaVersion'
 } else {
   allprojects {
-    tasks.withType(Test) {
+    tasks.withType(Test).configureEach {
       exclude '**/JvmVerification.class'
     }
   }
 }
+
+// Ignore sdk.properties so it doesn't spoil the build cache unnecessarily (see https://docs.gradle.org/6.6/userguide/more_about_tasks.html#sec:configure_input_normalization)
+allprojects {
+  normalization {
+    runtimeClasspath {
+      ignore('**/sdk.properties')
+    }
+  }
+}

buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy

@@ -755,7 +755,7 @@ class BeamModulePlugin implements Plugin<Project> {
         'varargs',
       ]
 
-      project.tasks.withType(JavaCompile) {
+      project.tasks.withType(JavaCompile).configureEach {
         options.encoding = "UTF-8"
         // As we want to add '-Xlint:-deprecation' we intentionally remove '-Xlint:deprecation' from compilerArgs here,
         // as intellij is adding this, see https://youtrack.jetbrains.com/issue/IDEA-196615
@@ -770,6 +770,10 @@ class BeamModulePlugin implements Plugin<Project> {
         + (defaultLintSuppressions + configuration.disableLintWarnings).collect { "-Xlint:-${it}" })
       }
 
+      project.tasks.withType(Jar).configureEach {
+        preserveFileTimestamps(false)
+      }
+
       if (project.hasProperty("compileAndRunTestsWithJava11")) {
         def java11Home = project.findProperty("java11Home")
         project.tasks.compileTestJava {
@@ -797,7 +801,7 @@ class BeamModulePlugin implements Plugin<Project> {
         filter { setFailOnNoMatchingTests(false) }
       }
 
-      project.tasks.withType(Test) {
+      project.tasks.withType(Test).configureEach {
         // Configure all test tasks to use JUnit
         useJUnit {}
         // default maxHeapSize on gradle 5 is 512m, lets increase to handle more demanding tests