Support overriding Trino's liveness probe with other probe type #813

workers:
  podOverrides:
      spec:
        containers:
        - name: trino
          livenessProbe:
            exec:
              command:
                - /bin/sh
                - -c
                - |
                  #!/bin/sh
                  mem_total=$(grep MemTotal /proc/meminfo | awk '{print $2}')
                  mem_available=$(grep MemAvailable /proc/meminfo | awk '{print $2}')
                  used_percent=$(( (100 * (mem_total - mem_available)) / mem_total ))
                  echo "Node memory usage: ${used_percent}%"
                  if [ "$used_percent" -gt 94 ]; then
                    echo "Node memory usage above 94% — failing liveness probe."
                    exit 1
                  fi

                  # TCP socket check (simulate original)
                  timeout 2 bash -c 'cat < /dev/null > /dev/tcp/127.0.0.1/8080' || exit 1
            periodSeconds: 30
            failureThreshold: 2
            timeoutSeconds: 10