Update Signup to use the queenbee_id for the tenant name

and not the subdomain. This change should have been in #665

app/models/signup.rb

@@ -55,7 +55,7 @@ class Signup
   end
 
   def tenant_name
-    @tenant_name ||= signal_account.subdomain
+    @tenant_name ||= @queenbee_account.id.to_s
   end
 
   def to_h

test/controllers/signup/accounts_controller_test.rb

@@ -66,7 +66,7 @@ class Signup::AccountsControllerTest < ActionDispatch::IntegrationTest
     end
 
     signal_account = SignalId::Account.last
-    ApplicationRecord.with_tenant(signal_account.subdomain) do
+    ApplicationRecord.with_tenant(signal_account.queenbee_id) do
       assert_equal Account.last, signal_account.peer
     end
   end

test/models/signup_test.rb

@@ -44,7 +44,8 @@ class SignupTest < ActiveSupport::TestCase
     assert @signup.user.persisted?
     assert_equal @signup.user.signal_user, @signup.signal_account.owner
 
-    assert_includes ApplicationRecord.tenants, @signup.signal_account.subdomain
+    assert_equal @signup.queenbee_account.id.to_s, @signup.tenant_name
+    assert_includes ApplicationRecord.tenants, @signup.tenant_name
   end
 
   test "the new account is named with company name if present" do
@@ -87,7 +88,8 @@ class SignupTest < ActiveSupport::TestCase
     assert @signup.user.persisted?
     assert_equal @signup.user.signal_user, @signup.signal_account.owner
 
-    assert_includes ApplicationRecord.tenants, @signup.signal_account.subdomain
+    assert_equal @signup.queenbee_account.id.to_s, @signup.tenant_name
+    assert_includes ApplicationRecord.tenants, @signup.tenant_name
   end
 
   test "#process does nothing if a validation error occurs creating identity" do