Add domain deleting support

spec/epp/domain_spec.rb

@@ -439,6 +439,15 @@ describe 'EPP Domain', epp: true do
         expect(d.owner_contact_code).to eq('mak21')
         expect(d.auth_info).to eq('2BARfoo')
       end
+
+      it 'does not delete domain if there are relations' do
+        expect(DomainContact.count).to eq(1)
+        response = epp_request('domains/delete.xml')
+        expect(response[:result_code]).to eq('1000')
+
+        expect(Domain.first).to eq(nil)
+        expect(DomainContact.count).to eq(0)
+      end
     end
 
     it 'checks a domain' do

spec/epp/requests/domains/delete.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
+  <command>
+    <delete>
+      <domain:delete
+       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
+        <domain:name>example.ee</domain:name>
+      </domain:delete>
+    </delete>
+    <clTRID>ABC-12345</clTRID>
+  </command>
+</epp>