fix(android): APK signing will fail when using MD5 keystore and JDK 8+

[jquick-axway]

JIRA:
https://jira.appcelerator.org/browse/TIMOB-26895

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MD5 Keystore Test:

1. Follow the test procedure documented in TIMOB-26895.
2. Verify that an APK was successfully built with that ticket's testmd5.keystore.

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SHA256 Keystore Test:

1. Copy the testsha256.keystore from TIMOB-26895 to the root directory of your project.
2. In Appc Studio, select "Package" from the top-left-most dropdown box.
3. In Appc Studio, select "Android Play Store" from the other dropdown box.
4. Click the build button.
5. For "Keystore Location", click the "Browse" button and select the testsha256.keystore file.
6. For "Keystore Password", enter: testsha256
7. For "Keypair Password", enter: testsha256
8. For "Key Alias", enter: testsha256
9. Click the "Publish" button.
10. Verify that an APK was successfully built.

[build]

	Messages
📖	💾 Here's the generated SDK zipfile.
📖	✅ All tests are passing Nice one! All 3727 tests are passing. (There are 467 tests skipped)

Generated by 🚫 dangerJS against 8a24496

[ypbnv]

Looks good to me.

[keerthi1032]

FR passed. Apk built successfully with MD5,SHA256,SHA1 keystone.

Test Environment:
Operating System
Name = Mac OS X
Version = 10.13.6
Architecture = 64bit
Node.js
Node.js Version = 8.9.1
npm Version = 5.5.1
Titanium CLI
CLI Version = 5.1.1
Titanium SDK
SDK Version = local sdk 8.1.0.v20190515105948
CLI =7.0.11
Studio =5.1.2.201903111843