Add ubuntu1804_nojava, ubuntu1804_java9, ubuntu1804_java10 to postsubmit.

PiperOrigin-RevId: 211795419
diff --git a/.bazelci/postsubmit.yml b/.bazelci/postsubmit.yml
index c3816bd..b5f79f7 100644
--- a/.bazelci/postsubmit.yml
+++ b/.bazelci/postsubmit.yml
@@ -51,6 +51,52 @@
     - "//tools/android/..."
     # Re-enable once fixed: https://github.com/bazelbuild/bazel/issues/5888
     - "-//src/test/java/com/google/devtools/build/android/ziputils:ziputils-tests"
+  ubuntu1804_nojava:
+    build_targets:
+    - "//examples/cpp:all"
+    test_flags:
+    - "--test_timeout=1200"
+    test_targets:
+    - "--"
+    - "//scripts/..."
+    - "//src/test/..."
+    - "//third_party/ijar/..."
+    # We can't run Android tests without an installed Android SDK / NDK.
+    - "-//src/test/java/com/google/devtools/build/android/..."
+  ubuntu1804_java9:
+    shell_commands:
+    - sed -i.bak -e 's/^# android_sdk_repository/android_sdk_repository/' -e 's/^#
+      android_ndk_repository/android_ndk_repository/' WORKSPACE
+    - rm -f WORKSPACE.bak
+    build_targets:
+    - "//src:bazel"
+    test_flags:
+    - "--test_timeout=1200"
+    test_targets:
+    - "--"
+    - "//scripts/..."
+    - "//src/test/..."
+    - "//third_party/ijar/..."
+    - "//tools/android/..."
+    # Re-enable once fixed: https://github.com/bazelbuild/bazel/issues/5888
+    - "-//src/test/java/com/google/devtools/build/android/ziputils:ziputils-tests"
+  ubuntu1804_java10:
+    shell_commands:
+    - sed -i.bak -e 's/^# android_sdk_repository/android_sdk_repository/' -e 's/^#
+      android_ndk_repository/android_ndk_repository/' WORKSPACE
+    - rm -f WORKSPACE.bak
+    build_targets:
+    - "//src:bazel"
+    test_flags:
+    - "--test_timeout=1200"
+    test_targets:
+    - "--"
+    - "//scripts/..."
+    - "//src/test/..."
+    - "//third_party/ijar/..."
+    - "//tools/android/..."
+    # Re-enable once fixed: https://github.com/bazelbuild/bazel/issues/5888
+    - "-//src/test/java/com/google/devtools/build/android/ziputils:ziputils-tests"
   macos:
     shell_commands:
     - sed -i.bak -e 's/^# android_sdk_repository/android_sdk_repository/' -e 's/^#