its less functional :-(

src/main/python/ddadevops/aws_mixin.py

@@ -4,8 +4,9 @@ from .devops_terraform_build import DevopsTerraformBuild
 
 
 def add_aws_mixin_config(config, account_name):
-    return config.update({'AwsMixin':
+    config.update({'AwsMixin':
                    {'account_name': account_name}})
+    return config
 
 
 class AwsMixin(DevopsTerraformBuild):

src/main/python/ddadevops/dda_pallet_mixin.py

@@ -4,7 +4,7 @@ from .devops_build import DevopsBuild
 
 
 def add_dda_pallet_mixin_config(config, tenant, application, domain_file_name):
-    return config.update({'DdaPalletMixin':
+    config.update({'DdaPalletMixin':
                    {'tenant': tenant,
                     'application': application,
                     'domain_file_name': domain_file_name,
@@ -16,6 +16,7 @@ def add_dda_pallet_mixin_config(config, tenant, application, domain_file_name):
              :node-ip "$ipv4"}]
  :provisioning-user {:login "root"}}
 """, }})
+    return config
 
 
 class DdaPalletMixin(DevopsBuild):

src/main/python/ddadevops/devops_terraform_build.py

@@ -9,12 +9,13 @@ def create_devops_terraform_build_config(stage, project_root_path, build_commons
                                          account_name, additional_vars, tf_import_name, tf_import_resource):
     ret = create_devops_build_config(
         stage, project_root_path, build_commons_path, module)
-    return ret.update({'account_name': account_name,
+    ret.update({'account_name': account_name,
                 'additional_vars': additional_vars,
                 'tf_import_name': tf_import_name,
                 'tf_import_resource': tf_import_resource,
                 'terraform_build_commons_dir_name': 'terraform',
                 'output_json_name': 'output.json'})
+    return ret
 
 
 class DevopsTerraformBuild(DevopsBuild):

src/main/python/ddadevops/hetzner_mixin.py

@@ -3,8 +3,9 @@ from .devops_terraform_build import DevopsTerraformBuild
 
 
 def add_hetzner_mixin_config(config):
-    return config.update({'HetznerMixin':
+    config.update({'HetznerMixin':
                    {'HETZNER_API_KEY_PATH_ENVIRONMENT': 'HETZNER_API_KEY_PATH'}})
+    return config
 
 
 class HetznerMixin(DevopsTerraformBuild):