Fix broken CI

[mtsmfm]

Current our CI keeps failing.

1. Extend timeout

For some reason, app.run spring_test_command may take 100+ seconds.

`bundle check || bundle update --retry=2`	107.863471355
`bin/rake test /home/travis/build/mtsmfm/spring-debug/test/apps/tmp/test/controllers/posts_controller_test.rb`	105.624732034
`gem install activesupport --version '4.2.10'`	22.66985453
`bin/rails runner 'load Rails.root.join("script.rb")'`	11.518353908
`bin/rake test /home/travis/build/mtsmfm/spring-debug/test/apps/tmp/test/controllers/posts_controller_test.rb`	6.040077579
`bundle exec rails g scaffold post title:string`	4.525084902

https://travis-ci.org/mtsmfm/spring-debug/jobs/404996066

I got above result by applying the following patch:

diff --git a/lib/spring/test/application.rb b/lib/spring/test/application.rb
index 9a00618..93f129e 100644
--- a/lib/spring/test/application.rb
+++ b/lib/spring/test/application.rb
@@ -119,6 +119,8 @@ module Spring
         puts dump_streams(command, output) if ENV["SPRING_DEBUG"]

         @times << (Time.now - start_time) if @times
+        $times ||= []
+        $times << {command: command.to_s, time: Time.now - start_time}

         output.merge(status: status, command: command)
       rescue Timeout::Error
diff --git a/test/acceptance_test.rb b/test/acceptance_test.rb
index 665aff9..c24e82e 100644
--- a/test/acceptance_test.rb
+++ b/test/acceptance_test.rb
@@ -2,3 +2,11 @@ require_relative "helper"

 class AcceptanceTest < Spring::Test::AcceptanceTest
 end
+
+Minitest.after_run do
+  puts ?- * 100
+
+  $times.sort_by {|time| - time[:time] }.each do |time|
+    puts "`#{time[:command]}`\t#{time[:time]}"
+  end
+end

2. Use specific rake version to fix Gem::InstallError

12.2.1 is the last version which supports ruby 1.9.

  1) Error:
AcceptanceTest#test_binstub_upgrade_with_old_binstub:
RuntimeError: command failed
$ bundle check || bundle update --retry=2
--- stdout ---
Bundler can't satisfy your Gemfile's dependencies.
Install missing gems with `bundle install`.
Fetching gem metadata from http://rubygems.org/...............
Fetching gem metadata from http://rubygems.org/..
Resolving dependencies....
Fetching rake 12.3.1
Installing rake 12.3.1
Gem::InstallError: rake requires Ruby version >= 2.0.0.
An error occurred while installing rake (12.3.1), and Bundler cannot continue.
Make sure that `gem install rake -v '12.3.1' --source 'http://rubygems.org/'`
succeeds before bundling.

https://travis-ci.org/mtsmfm/spring-debug/jobs/404541780

[rails-bot]

Thanks for the pull request, and welcome! The Rails team is excited to review your changes, and you should hear from @rafaelfranca (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

Please see the contribution instructions for more information.

[mtsmfm]

This CI still failed but my forked version finary passed after few times restarting 😵
https://travis-ci.org/mtsmfm/spring/builds/387032597

[mtsmfm]

Now it's green 💚
@rafaelfranca Can you review?

[matthewd]

🙇🙇🙇

[mtsmfm]

@matthewd Thanks 😍