chore(actions): revert dynamic test scheduler (#12180)

Due to false green observed on `master`.

.ci/run_tests.sh

@@ -0,0 +1,154 @@
+#!/usr/bin/env bash
+set -e
+
+function cyan() {
+    echo -e "\033[1;36m$*\033[0m"
+}
+
+function red() {
+    echo -e "\033[1;31m$*\033[0m"
+}
+
+function get_failed {
+    if [ ! -z "$FAILED_TEST_FILES_FILE" -a -f "$FAILED_TEST_FILES_FILE" ]
+    then
+        cat < $FAILED_TEST_FILES_FILE
+    else
+        echo "$@"
+    fi
+}
+
+BUSTED_ARGS="--keep-going -o htest -v --exclude-tags=flaky,ipv6"
+if [ ! -z "$FAILED_TEST_FILES_FILE" ]
+then
+    BUSTED_ARGS="--helper=spec/busted-log-failed.lua $BUSTED_ARGS"
+fi
+
+if [ "$KONG_TEST_DATABASE" == "postgres" ]; then
+    export TEST_CMD="bin/busted $BUSTED_ARGS,off"
+
+    psql -v ON_ERROR_STOP=1 -h localhost --username "$KONG_TEST_PG_USER" <<-EOSQL
+        CREATE user ${KONG_TEST_PG_USER}_ro;
+        GRANT CONNECT ON DATABASE $KONG_TEST_PG_DATABASE TO ${KONG_TEST_PG_USER}_ro;
+        \c $KONG_TEST_PG_DATABASE;
+        GRANT USAGE ON SCHEMA public TO ${KONG_TEST_PG_USER}_ro;
+        ALTER DEFAULT PRIVILEGES FOR ROLE $KONG_TEST_PG_USER IN SCHEMA public GRANT SELECT ON TABLES TO ${KONG_TEST_PG_USER}_ro;
+EOSQL
+
+elif [ "$KONG_TEST_DATABASE" == "cassandra" ]; then
+  echo "Cassandra is no longer supported"
+  exit 1
+
+else
+    export TEST_CMD="bin/busted $BUSTED_ARGS,postgres,db"
+fi
+
+if [ "$TEST_SUITE" == "integration" ]; then
+    if [[ "$TEST_SPLIT" == first* ]]; then
+        # GitHub Actions, run first batch of integration tests
+        files=$(ls -d spec/02-integration/* | sort | grep -v 05-proxy)
+        files=$(get_failed $files)
+        eval "$TEST_CMD" $files
+
+    elif [[ "$TEST_SPLIT" == second* ]]; then
+        # GitHub Actions, run second batch of integration tests
+        # Note that the split here is chosen carefully to result
+        # in a similar run time between the two batches, and should
+        # be adjusted if imbalance become significant in the future
+        files=$(ls -d spec/02-integration/* | sort | grep 05-proxy)
+        files=$(get_failed $files)
+        eval "$TEST_CMD" $files
+
+    else
+        # Non GitHub Actions
+        eval "$TEST_CMD" $(get_failed spec/02-integration/)
+    fi
+fi
+
+if [ "$TEST_SUITE" == "dbless" ]; then
+    eval "$TEST_CMD" $(get_failed spec/02-integration/02-cmd \
+                                  spec/02-integration/05-proxy \
+                                  spec/02-integration/04-admin_api/02-kong_routes_spec.lua \
+                                  spec/02-integration/04-admin_api/15-off_spec.lua \
+                                  spec/02-integration/08-status_api/01-core_routes_spec.lua \
+                                  spec/02-integration/08-status_api/03-readiness_endpoint_spec.lua \
+                                  spec/02-integration/11-dbless \
+                                  spec/02-integration/20-wasm)
+fi
+if [ "$TEST_SUITE" == "plugins" ]; then
+    set +ex
+    rm -f .failed
+
+    if [[ "$TEST_SPLIT" == first* ]]; then
+        # GitHub Actions, run first batch of plugin tests
+        PLUGINS=$(get_failed $(ls -d spec/03-plugins/* | head -n22))
+
+    elif [[ "$TEST_SPLIT" == second* ]]; then
+        # GitHub Actions, run second batch of plugin tests
+        # Note that the split here is chosen carefully to result
+        # in a similar run time between the two batches, and should
+        # be adjusted if imbalance become significant in the future
+        PLUGINS=$(get_failed $(ls -d spec/03-plugins/* | tail -n+23))
+
+    else
+        # Non GitHub Actions
+        PLUGINS=$(get_failed $(ls -d spec/03-plugins/*))
+    fi
+
+    for p in $PLUGINS; do
+        echo
+        cyan "--------------------------------------"
+        cyan $(basename $p)
+        cyan "--------------------------------------"
+        echo
+
+        $TEST_CMD $p || echo "* $p" >> .failed
+    done
+
+    if [[ "$TEST_SPLIT" != first* ]]; then
+        cat kong-*.rockspec | grep kong- | grep -v zipkin | grep -v sidecar | grep "~" | grep -v kong-prometheus-plugin | while read line ; do
+            REPOSITORY=`echo $line | sed "s/\"/ /g" | awk -F" " '{print $1}'`
+            VERSION=`luarocks show $REPOSITORY | grep $REPOSITORY | head -1 | awk -F" " '{print $2}' | cut -f1 -d"-"`
+            REPOSITORY=`echo $REPOSITORY | sed -e 's/kong-prometheus-plugin/kong-plugin-prometheus/g'`
+            REPOSITORY=`echo $REPOSITORY | sed -e 's/kong-proxy-cache-plugin/kong-plugin-proxy-cache/g'`
+
+            echo
+            cyan "--------------------------------------"
+            cyan $REPOSITORY $VERSION
+            cyan "--------------------------------------"
+            echo
+
+            git clone https://github.com/Kong/$REPOSITORY.git --branch $VERSION --single-branch /tmp/test-$REPOSITORY || \
+            git clone https://github.com/Kong/$REPOSITORY.git --branch v$VERSION --single-branch /tmp/test-$REPOSITORY
+            sed -i 's/grpcbin:9000/localhost:15002/g' /tmp/test-$REPOSITORY/spec/*.lua
+            sed -i 's/grpcbin:9001/localhost:15003/g' /tmp/test-$REPOSITORY/spec/*.lua
+            cp -R /tmp/test-$REPOSITORY/spec/fixtures/* spec/fixtures/ || true
+            pushd /tmp/test-$REPOSITORY
+            luarocks make
+            popd
+
+            $TEST_CMD /tmp/test-$REPOSITORY/spec/ || echo "* $REPOSITORY" >> .failed
+
+        done
+    fi
+
+    if [ -f .failed ]; then
+        echo
+        red "--------------------------------------"
+        red "Plugin tests failed:"
+        red "--------------------------------------"
+        cat .failed
+        exit 1
+    else
+        exit 0
+    fi
+fi
+if [ "$TEST_SUITE" == "pdk" ]; then
+    prove -I. -r t
+fi
+if [ "$TEST_SUITE" == "unit" ]; then
+    unset KONG_TEST_NGINX_USER KONG_PG_PASSWORD KONG_TEST_PG_PASSWORD
+    scripts/autodoc
+    bin/busted -v -o htest spec/01-unit
+    make lint
+fi