Add tags for x86-specific and flaky tests

Author: shepmaster

tests/spec/features/compilation_targets_spec.rb

@@ -42,7 +42,7 @@
     end
   end
 
-  context "when AT&T syntax is selected" do
+  context "when AT&T syntax is selected", :assembly do
     before do
       in_config_menu { choose("AT&T") }
     end
@@ -59,7 +59,7 @@
     end
   end
 
-  context "when Intel syntax is selected" do
+  context "when Intel syntax is selected", :assembly do
     before do
       in_config_menu { choose("Intel") }
     end

tests/spec/features/navigation_spec.rb

@@ -44,7 +44,7 @@
     expect(page).to be_at_url('/')
   end
 
-  scenario "Navigating to help changes the URL" do
+  scenario "Navigating to help changes the URL", :flaky do
     visit '/'
     expect(page).to have_content('RUN')