Enforce SSLv3 java opts for CLI (#25)

I've been experiencing an intermittent `bad_record_mac` error when
trying to index documents into cloud.
This error only occurs if I don't provide a ca_fingerprint. It seems to
be an issue with the SSL/TLS handshake.

After some digging I found a [similar
issue](https://support.sonatype.com/hc/en-us/articles/213464078-HTTPS-SSL-deploy-fails-with-Received-fatal-alert-bad-record-mac),
and that person resolved it by enforcing SSLv3.

Before adding these opts, the error occurred 9/10 times (it didn't occur
on the first run for unknown reasons).
After adding these opts, the error occurred 0/10 times.

I've added the opts to the CLI entry file so they are enforced for all
Crawler actions without relying on command line args.

bin/crawler

@@ -18,4 +18,11 @@ require 'yaml'
 require_relative File.expand_path('../../lib/environment', __FILE__)
 require 'crawler/cli'
 
+java_import 'java.lang.System'
+
+# These opts are to prevent an intermittent `bad_record_mac` error when indexing into ES.
+# One workaround is to force use of SSLv3 only.
+System.setProperty('force.http.jre.executor', 'true')
+System.setProperty('https.protocols', 'SSLv3')
+
 Dry::CLI.new(Crawler::CLI).call