Update nodejs runtime to version 16

We had been using version 14 which is the previous LTS. Now there are
problems running:

  npx browserslist@latest --update-db

running out of memory. Update to the current nodejs LTS version to
ensure we are running an up to date runtime that hopefully performs more
consistently with the browserslist command.

Change-Id: Ib20c1090ea0f30b7dac2780b6ed963dd6e4b6f77

.zuul.yaml

@@ -277,7 +277,7 @@
 
 - project:
     vars:
-      node_version: 14
+      node_version: 16
       release_python: python3
     check:
       jobs:

Dockerfile

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM docker.io/library/node:14-bullseye as js-builder
+FROM docker.io/library/node:16-bullseye as js-builder
 
 COPY web /tmp/src
 # Explicitly run the Javascript build

tools/install-js-tools.sh

@@ -25,7 +25,7 @@ if type apt-get; then
     $SUDO apt-get install -y apt-transport-https curl gnupg2
     # Install recent NodeJS repo
     curl -sS https://deb.nodesource.com/gpgkey/nodesource.gpg.key | $SUDO apt-key add -
-    echo "deb https://deb.nodesource.com/node_10.x bionic main" | $SUDO tee /etc/apt/sources.list.d/nodesource.list
+    echo "deb https://deb.nodesource.com/node_16.x focal main" | $SUDO tee /etc/apt/sources.list.d/nodesource.list
     # Install yarn repo
     curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | $SUDO apt-key add -
     echo "deb https://dl.yarnpkg.com/debian/ stable main" | $SUDO tee /etc/apt/sources.list.d/yarn.list

tools/pip.sh

@@ -24,7 +24,7 @@ then
     # Initialize nodeenv and tell it to re-use the currently active virtualenv
     attempts=0
     set +e
-    until nodeenv --python-virtualenv -n 14.3.0 ; do
+    until nodeenv --python-virtualenv -n 16.14.0 ; do
         ((attempts++))
         if [[ $attempts > 2 ]]
         then