Test Should Not Assume No BOSH DNS

This change updates a test so that it no longer assumes that it's running in a
scenario that doesn't have BOSH DNS.

[resolves #804]

Signed-off-by: Ben Hale <[email protected]>

Author: Mark Soderquist

spec/java_buildpack/jre/open_jdk_like_jre_spec.rb

@@ -56,6 +56,8 @@
   it 'does not disable dns caching if no BOSH DNS',
      cache_fixture: 'stub-java.tar.gz' do
 
+    allow_any_instance_of(Resolv::DNS::Config).to receive(:nameserver_port).and_return([['8.8.8.8', 53]])
+
     component.detect
     component.compile