impr(android): implement TLSv3 support

[garymathews]

• Implement TLSv3 support into Titanium.Network

TEST CASE

const win = Ti.UI.createWindow({ backgroundColor: 'gray' });
const lbl = Ti.UI.createLabel({ text: 'Loading...' });

const client = Ti.Network.createHTTPClient({
    onload: e => {
        const html = e.source.responseText;

        if (html.includes('protocol_tls1_3">Yes')) {
            lbl.text = 'TLSv3: Supported';
            lbl.color = 'green';
        } else {
            lbl.text = 'TLSv3: Unsupported';
            lbl.color = 'red';
        }
    },
    onerror: e => {
        lbl.text = 'Could not determine TLSv3 support!';
        lbl.color = 'red';
    },
    timeout: 8000
});
client.open('GET', 'https://ssllabs.com/ssltest/viewMyClient.html');
client.send();

win.add(lbl);
win.open();

JIRA Ticket

[build]

	Messages
📖	💾 Here's the generated SDK zipfile.
📖	✅ All tests are passing Nice one! All 4373 tests are passing. (There are 475 tests skipped)
📖	✊ The commits in this PR match our conventions! Feel free to Rebase and Merge this PR when ready.

Generated by 🚫 dangerJS against 08cba01

[sgtcoolguy]

Please add a unit test that automates the exact test case you pasted in manually.

[build]

• ⚠️ tests/Resources/ti.network.httpclient.addontest.js line 10 – 'should' is assigned a value but never used. (no-unused-vars)

[build]

• ⚠️ tests/Resources/ti.network.httpclient.addontest.js line 29 – 'e' is defined but never used. Allowed unused args must match /^_.+/u. (no-unused-vars)

[jquick-axway]

@garymathews, maybe we should add the TLS_VERSION_1_3 constant to our iOS code in this PR as well. It turns out our iOS code never uses these constants; it only defines them.
https://github.com/appcelerator/titanium_mobile/blob/16f04c5a2437a948b6cbd3895421035a4c180983/iphone/Classes/NetworkModule.h#L19-L24
https://github.com/appcelerator/titanium_mobile/blob/16f04c5a2437a948b6cbd3895421035a4c180983/iphone/Classes/NetworkModule.m#L196-L198

The rest of your changes look fine. Thanks!

[jquick-axway]

CR: Pass

[ssekhri]

FR Passed.
The response text for httpclient request to a TLS test page returns success for TLS1.3 on Android Q emulator. For older Android versions the TLS1.3 support is returned as false.
Also when tlsVersion is set to 1.2 for httpclient then the response text returns false on Android Q emulator as well.
Verified on:
Mac OS 10.14.6
Ti SDK: 8.3.0.v20190913134535
Appc CLI: 7.1.1
Node: 10.5.0
JDK: 10.0.2
Studio: 5.1.4.201909061933
Device: Pixel2 emulator (10.0), Pixel2 emulator (8.0.0)