Update parameter support for filename

CHANGELOG.rst

@@ -5,6 +5,7 @@ Brewtils Changelog
 ------
 TBD
 
+- Update Parameter and Resolvable to add filename
 - Updated Wait Timeout Exception expected HTTP code from 408 to 504
 - Dropping Official Python 2.7 Support
 

brewtils/models.py

@@ -321,6 +321,7 @@ def __init__(
         self,
         key=None,
         type=None,  # noqa # shadows built-in
+        filename=None,
         multi=None,
         display_name=None,
         optional=None,
@@ -339,6 +340,7 @@ def __init__(
     ):
         self.key = key
         self.type = type
+        self.filename = filename
         self.multi = multi
         self.display_name = display_name
         self.optional = optional
@@ -1690,11 +1692,13 @@ def __init__(
         self,
         id=None,  # noqa # shadows built-in
         type=None,  # noqa # shadows built-in
+        filename=None,
         storage=None,
         details=None,
     ):
         self.id = id
         self.type = type
+        self.filename = filename
         self.storage = storage
         self.details = details or {}