Add support for `owasp` in security training for vulnerabilities

owasp	cwe + owasp

Thanks @sming-gitlab for testing this with frontend changes, the above screenshot is copied from there !93377 (comment 1049968526)

Related to #349606 (closed)

ee/app/finders/security/training_providers/base_url_finder.rb

@@ -10,8 +10,6 @@ class BaseUrlFinder
       self.reactive_cache_lifetime = 10.minutes
       self.reactive_cache_work_type = :external_dependency
 
-      ALLOWED_IDENTIFIER_LIST = %w[cwe].freeze
-
       def initialize(project, provider, identifier_external_id, language = nil)
         @project = project
         @provider = provider
@@ -70,7 +68,7 @@ def language_id_suffix
       end
 
       def allowed_identifier_list
-        ALLOWED_IDENTIFIER_LIST
+        raise 'allowed_identifier_list must be overwritten to return training url'
       end
     end
   end