Default to download from BinTray

According to data on Bintray, SonarQube has been using Bintray since June, 2015.
Bintray provides all the versions of SonarQube including 4.5.6 and newer releases.

Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

Author: bramwelt

README.md

@@ -32,7 +32,7 @@ or
       service       => 'sonar',
       installroot   => '/usr/local',
       home          => '/var/local/sonar',
-      download_url  => 'http://downloads.sonarsource.com/sonarqube',
+      download_url  => 'https://sonarsource.bintray.com/Distribution/sonarqube'
       jdbc          => $jdbc,
       web_java_opts => '-Xmx1024m',
       log_folder    => '/var/local/sonar/logs',

manifests/init.pp

@@ -22,8 +22,7 @@
   $host             = undef,
   $port             = 9000,
   $portAjp          = -1,
-  # For version greater or equals to 5.2, $download_url must be set to 'https://sonarsource.bintray.com/Distribution/sonarqube'
-  $download_url     = 'http://downloads.sonarsource.com/sonarqube',
+  $download_url     = 'https://sonarsource.bintray.com/Distribution/sonarqube',
   $download_dir     = '/usr/local/src',
   $context_path     = '/',
   $arch             = $sonarqube::params::arch,

spec/classes/init_spec.rb

@@ -6,7 +6,7 @@
 
   context "when installing version 4", :compile do
     let(:params) {{ :version => '4.5.5' }}
-    it { should contain_wget__fetch('download-sonar').with_source('http://downloads.sonarsource.com/sonarqube/sonarqube-4.5.5.zip') }
+    it { should contain_wget__fetch('download-sonar').with_source('https://sonarsource.bintray.com/Distribution/sonarqube/sonarqube-4.5.5.zip') }
   end
 
   context "when crowd configuration is supplied", :compile do