[MOD-2355] appcelerator.https - Invalid certificate accepted if valid certificate was accepted before

var url1 = "http://www.appcelerator.com/";
    var securityManager = https.createX509CertificatePinningSecurityManager([
    {
        url: url1,
        serverCertificate: "appcelerator.com.der",
    }
]);
    var httpClient = Ti.Network.createHTTPClient({
    onload: firstSuccess,
    onerror: firstfailure,
    timeout : 5000,
    securityManager: securityManager,
    validatesSecureCertificate : true,
 });
httpClient.open("GET", url1); 
httpClient.send();

var url2 = "https://www.appcelerator.com/mobile-app-development-products/";
    var securityManager = https.createX509CertificatePinningSecurityManager([
    {
        url: url2,
        serverCertificate: "google.com.der", // Should not work, because it's pinned to a different domain
    }
]);
    var httpClient = Ti.Network.createHTTPClient({
    onload: secondSuccess,
    onerror: secondfailure,
    timeout : 5000,
    securityManager: securityManager,
    validatesSecureCertificate : true,
 });
httpClient.open("GET", url2); 
httpClient.send();