(PUP-10889) Skip test on jruby

JRuby doesn't allow ciphers to be set on the ssl context[1] so skip that
part.

[1] jruby/jruby#3100

Author: joshcooper

spec/integration/application/plugin_spec.rb

@@ -2,7 +2,7 @@
 require 'puppet/face'
 require 'puppet_spec/puppetserver'
 
-describe "puppet plugin" do
+describe "puppet plugin", unless: Puppet::Util::Platform.jruby? do
   include_context "https client"
 
   let(:server) { PuppetSpec::Puppetserver.new }