Add outputs to OAProc function argument (#253)

* Add outputs kwargs to OAProc

* use **kwargs

cc geopython/pygeoapi#1899

* Fix typo

* Use named process arguments

* Fix missed kwarg

Author: webb-ben

pygeometa/pygeoapi_plugin.py

@@ -384,7 +384,7 @@ def __init__(self, processor_def):
 
         super().__init__(processor_def, PROCESS_METADATA_IMPORT)
 
-    def execute(self, data):
+    def execute(self, data, outputs=None):
 
         response = None
         mimetype = 'application/json'
@@ -433,7 +433,7 @@ def __init__(self, processor_def):
 
         super().__init__(processor_def, PROCESS_METADATA_VALIDATE)
 
-    def execute(self, data):
+    def execute(self, data, outputs=None):
 
         response = None
         mimetype = 'application/json'
@@ -477,7 +477,7 @@ def __init__(self, processor_def):
 
         super().__init__(processor_def, PROCESS_METADATA_GENERATE)
 
-    def execute(self, data):
+    def execute(self, data, outputs=None):
 
         response = None
         mimetype = 'application/json'
@@ -525,7 +525,7 @@ def __init__(self, processor_def):
 
         super().__init__(processor_def, PROCESS_METADATA_TRANSFORM)
 
-    def execute(self, data):
+    def execute(self, data, outputs=None):
 
         content = None
         response = None