Set up data before starting the browser in tests

Changing the database after the process running the browser has started
is proving to be one of the reasons tests are failing sometimes, so
we're reducing the number of times were that happens. In this case, we
were changing a setting.

spec/system/officing/residence_spec.rb

@@ -114,14 +114,15 @@ describe "Residence", :with_frozen_time do
   context "With remote census configuration", :remote_census do
     before do
       create(:poll_officer_assignment, officer: officer)
-      login_through_form_as_officer(officer.user)
-      visit officing_root_path
     end
 
     describe "Display form fields according to the remote census configuration" do
       scenario "by default (without custom census) not display date_of_birth and postal_code" do
         Setting["feature.remote_census"] = false
 
+        login_through_form_as_officer(officer.user)
+        visit officing_root_path
+
         within("#side_menu") do
           click_link "Validate document"
         end
@@ -134,6 +135,9 @@ describe "Residence", :with_frozen_time do
       end
 
       scenario "with all custom census not display year_of_birth" do
+        login_through_form_as_officer(officer.user)
+        visit officing_root_path
+
         within("#side_menu") do
           click_link "Validate document"
         end
@@ -149,6 +153,9 @@ describe "Residence", :with_frozen_time do
     scenario "can verify voter with date_of_birth and postal_code fields" do
       mock_valid_remote_census_response
 
+      login_through_form_as_officer(officer.user)
+      visit officing_root_path
+
       within("#side_menu") do
         click_link "Validate document"
       end