CertificateUtils should support the VoIP message

[qiitro]

the method CertificateUtils.validateCertificate does not support the APNs VoIP message

   ` if (!cn.toLowerCase(Locale.US).contains("push")) {
        throw new CertificateException("Not a push certificate - " + cn);
    }`

   ` if (production && cn.toLowerCase(Locale.US).contains("apple development ios push services")) {
        throw new CertificateEnvironmentMismatchException("Invalid environment for this certificate");
    } else if (!production && cn.toLowerCase(Locale.US).contains("apple production ios push services")) {
        throw new CertificateEnvironmentMismatchException("Invalid environment for this certificate");
    }`

it may contains "voip services", not just "push"