Improve rake test tasks

* Rename `no_sshd' as `ci';
* Configure a quiet profile for cucumber;
* Workaround travis CI scrolling bugs with quiet output.

Rakefile

@@ -5,12 +5,15 @@ task default: %i[features spec]
 
 Cucumber::Rake::Task.new(:features)
 
-Cucumber::Rake::Task.new(:features_no_sshd) do |t|
+Cucumber::Rake::Task.new(:features_ci) do |t|
   t.instance_eval { @desc << ' excluding @ci_skip' }
   t.cucumber_opts = '--tags ~@ci_skip'
+  t.profile = 'quiet' if ENV.key? 'TRAVIS'
 end
 
-RSpec::Core::RakeTask.new(:spec)
+RSpec::Core::RakeTask.new do |t|
+  t.rspec_opts = '--format progress' if ENV.key? 'TRAVIS'
+end
 
 desc 'Run CI test suite'
-task ci: %i[features_no_sshd spec]
+task ci: %i[features_ci spec]