Merge branch 'pages-verify-domain-indicate-absolute' into 'master'

VerifyPagesDomain: suffix with . indicate absolute fqdn

See merge request gitlab-org/gitlab!75696

app/services/verify_pages_domain_service.rb

@@ -85,7 +85,8 @@ class VerifyPagesDomainService < BaseService
   end
 
   def check(domain_name, resolver)
-    records = parse(txt_records(domain_name, resolver))
+    # Append '.' to domain_name, indicating absolute FQDN
+    records = parse(txt_records(domain_name + '.', resolver))
 
     records.any? do |record|
       record == domain.keyed_verification_code || record == domain.verification_code

spec/services/verify_pages_domain_service_spec.rb

@@ -372,7 +372,8 @@ RSpec.describe VerifyPagesDomainService do
     allow(resolver).to receive(:getresources) { [] }
     stubbed_lookups.each do |domain, records|
       records = Array(records).map { |txt| Resolv::DNS::Resource::IN::TXT.new(txt) }
-      allow(resolver).to receive(:getresources).with(domain, Resolv::DNS::Resource::IN::TXT) { records }
+      # Append '.' to domain_name, indicating absolute FQDN
+      allow(resolver).to receive(:getresources).with(domain + '.', Resolv::DNS::Resource::IN::TXT) { records }
     end
 
     resolver