MINOR: add task ':streams:testAll' (apache#9073)

Adds a new task (`:streams:testAll`) to gradle to run all the tests for all Streams sub-projects.

Reviewers: Boyang Chen <[email protected]>

README.md

@@ -107,6 +107,10 @@ This is for `core`, `examples` and `clients`
     ./gradlew core:jar
     ./gradlew core:test
 
+Streams has multiple sub-projects, but you can run all the tests:
+
+    ./gradlew :streams:testAll
+
 ### Listing all gradle tasks ###
     ./gradlew tasks
 

build.gradle

@@ -1266,6 +1266,27 @@ project(':streams') {
     if( !generatedDocsDir.exists() ) { generatedDocsDir.mkdirs() }
     standardOutput = new File(generatedDocsDir, "streams_config.html").newOutputStream()
   }
+
+  task testAll(
+    dependsOn: [
+            ':streams:test',
+            ':streams:test-utils:test',
+            ':streams:streams-scala:test',
+            ':streams:upgrade-system-tests-0100:test',
+            ':streams:upgrade-system-tests-0101:test',
+            ':streams:upgrade-system-tests-0102:test',
+            ':streams:upgrade-system-tests-0110:test',
+            ':streams:upgrade-system-tests-10:test',
+            ':streams:upgrade-system-tests-11:test',
+            ':streams:upgrade-system-tests-20:test',
+            ':streams:upgrade-system-tests-21:test',
+            ':streams:upgrade-system-tests-22:test',
+            ':streams:upgrade-system-tests-23:test',
+            ':streams:upgrade-system-tests-24:test',
+            ':streams:upgrade-system-tests-25:test',
+            ':streams:examples:test'
+    ]
+  )
 }
 
 project(':streams:streams-scala') {