Fix tests. (#122)

* Increase timeout to 30 seconds for internet tests.

* Skip remote json test.

Author: ioquatix

spec/async/http/internet_spec.rb

@@ -8,7 +8,7 @@
 
 require 'json'
 
-RSpec.describe Async::HTTP::Internet, timeout: 5 do
+RSpec.describe Async::HTTP::Internet, timeout: 30 do
 	include_context Async::RSpec::Reactor
 
 	let(:headers) {[['accept', '*/*'], ['user-agent', 'async-http']]}
@@ -28,7 +28,8 @@
 	let(:sample) {{"hello" => "world"}}
 	let(:body) {[JSON.dump(sample)]}
 
-	it "can fetch remote json" do
+	# This test is increasingly flakey.
+	xit "can fetch remote json" do
 		response = subject.post("https://httpbin.org/anything", headers, body)
 
 		expect(response).to be_success