Make sure the user is logged out before they're logged in again

Signed-off-by: Rémy Coutable <remy@rymai.me>

spec/features/issues/user_uses_slash_commands_spec.rb

@@ -178,9 +178,10 @@ feature 'Issues > User uses quick actions', :js do
       end
 
       context 'when the project is valid but the user not authorized' do
-        let(:project_unauthorized) {create(:project, :public)}
+        let(:project_unauthorized) { create(:project, :public) }
 
         before do
+          gitlab_sign_out
           sign_in(user)
           visit project_issue_path(project, issue)
         end
@@ -195,6 +196,7 @@ feature 'Issues > User uses quick actions', :js do
 
       context 'when the project is invalid' do
         before do
+          gitlab_sign_out
           sign_in(user)
           visit project_issue_path(project, issue)
         end