Add a separate config for Bazel 8 to rules_java CI

PiperOrigin-RevId: 729541202
Change-Id: Ife01d73c2a82ebd1c74af91c5e1e0c317a0823a8

Author: hvadehra

.bazelci/presubmit.yml

@@ -39,16 +39,16 @@ flags_workspace_integration: &flags_workspace_integration
 buildifier: latest
 
 tasks:
-# TODO: add config for 8.0.0 once released
 # Bazel 7.x
-  ubuntu2004:
+  ubuntu2004_bazel7:
     name: "Bazel 7.x"
     bazel: "7.4.0"
+    platform: ubuntu2004
     build_targets: *build_targets
     test_targets: *test_targets
     test_flags:
       - "--test_tag_filters=-min_bazel_8"
-  ubuntu2004_integration:
+  ubuntu2004_integration_bazel7:
     name: "Bazel 7.x Integration"
     bazel: "7.4.0"
     platform: ubuntu2004
@@ -57,7 +57,7 @@ tasks:
       - sh setup.sh
     build_targets: *build_targets_integration
     test_targets: *test_target_integration
-  ubuntu2004_integration_workspace:
+  ubuntu2004_integration_workspace_bazel7:
     name: "Bazel 7.x Integration (WORKSPACE)"
     bazel: "7.4.0"
     platform: ubuntu2004
@@ -68,13 +68,52 @@ tasks:
     build_flags: *flags_workspace_integration
     test_targets: *test_target_integration
     test_flags: *flags_workspace_integration
-  macos:
+  macos_bazel7:
     name: "Bazel 7.x"
     bazel: "7.4.0"
+    platform: macos
     build_targets: *build_targets
-  windows:
+  windows_bazel7:
     name: "Bazel 7.x"
     bazel: "7.4.0"
+    platform: windows
+    build_targets: *build_targets
+# Bazel 8.x
+  ubuntu2004_bazel8:
+    name: "Bazel 8.x"
+    bazel: "8.1.0"
+    platform: ubuntu2004
+    build_targets: *build_targets
+    test_targets: *test_targets
+  ubuntu2004_integration_bazel8:
+    name: "Bazel 8.x Integration"
+    bazel: "8.1.0"
+    platform: ubuntu2004
+    working_directory: "test/repo"
+    shell_commands:
+      - sh setup.sh
+    build_targets: *build_targets_integration
+    test_targets: *test_target_integration
+  ubuntu2004_integration_workspace_bazel8:
+    name: "Bazel 8.x Integration (WORKSPACE)"
+    bazel: "8.1.0"
+    platform: ubuntu2004
+    working_directory: "test/repo"
+    shell_commands:
+      - sh setup.sh
+    build_targets: *build_targets_integration
+    build_flags: *flags_workspace_integration
+    test_targets: *test_target_integration
+    test_flags: *flags_workspace_integration
+  macos_bazel8:
+    name: "Bazel 8.x"
+    bazel: "8.1.0"
+    platform: macos
+    build_targets: *build_targets
+  windows_bazel8:
+    name: "Bazel 8.x"
+    bazel: "8.1.0"
+    platform: windows
     build_targets: *build_targets
 # Bazel@HEAD
   ubuntu2004_head: