Refactor QNAP module for traditional creds

Author: wvu

modules/auxiliary/gather/qnap_backtrace_admin_hash.rb

@@ -90,11 +90,15 @@ def run
 
     if admin_hash
       print_good("Hopefully this is your hash: #{admin_hash}")
-      store_valid_credential(
-        user:         'admin',
-        private:      admin_hash,
-        private_type: :nonreplayable_hash
-      )
+      credential_data = {
+        workspace_id:    myworkspace_id,
+        module_fullname: self.fullname,
+        username:        'admin',
+        private_data:    admin_hash,
+        private_type:    :nonreplayable_hash,
+        jtr_format:      'md5crypt'
+      }.merge(service_details)
+      create_credential(credential_data)
     else
       print_error('Looks like we didn\'t find the hash :(')
     end