Suppress only specific database exception

Allow all other exceptions to fall throw.
Fixes zfcampus#364
Does not conflict with zfcampus#304

src/Model/DbAutodiscoveryModel.php

@@ -34,7 +34,10 @@ public function fetchColumns($module, $version, $adapter_name)
 
         try {
             $metadata = new Metadata($adapter);
-        } catch (\Exception $e) {
+        } catch (\InvalidArgumentException $e) {
+            if (strpos($e->getMessage(), 'Unknown adapter platform') === false) {
+                throw $e;
+            }
             return [];
         }