[MINOR] Fix failing builds (#341)

- Major changes:
Travis builds are failing due to Node.js version problems. I've fixed this in this commit.

- Minor changes to note:
Java 8 testing is dropped for Travis - will be migrated to github actions.

- Tests for the changes:
Existing tests comply.

- Other comments:
None

Closes #341
diff --git a/.asf.yaml b/.asf.yaml
new file mode 100644
index 0000000..4cdd412
--- /dev/null
+++ b/.asf.yaml
@@ -0,0 +1,43 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Check https://cwiki.apache.org/confluence/display/INFRA/Git+-+.asf.yaml+features
+
+github:
+  protected_branches:
+    master:
+      required_status_checks:
+        # strict means "Require branches to be up to date before merging".
+        strict: true
+        # contexts are the names of checks that must pass
+        contexts: []
+#          - gh-infra/jenkins
+#          - another/build-that-must-pass
+
+      required_pull_request_reviews:
+        dismiss_stale_reviews: true
+        required_approving_review_count: 1
+
+      # squash or rebase must be allowed in the repo for this setting to be set to true.
+      required_linear_history: false
+
+      required_signatures: true
+    branch_b:
+      required_signatures: true
+  del_branch_on_merge: true
+
diff --git a/.travis.yml b/.travis.yml
index 4c2e57d..7a900fb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,7 +22,6 @@
 # For maven builds
 language: java
 jdk:
-  - openjdk8
   - openjdk11
 env:
   global:
@@ -30,7 +29,7 @@
   jobs:
     - GOAL="verify -B -q -ff -Dsurefire.useFile=false -Dorg.slf4j.simpleLogger.defaultLogLevel=info"
 before_install:
-  - nvm install --lts # for Web UI build
+  - nvm install 16.15.1 # for Web UI build
 install: true
 script:
   # the following command line builds the project, runs the tests with coverage