[Python] Unable to use both -DpackageName and -DpackageVersion parameters in one invocation

Description

When using -DpackageName and -DpackageVersion to specify values for NAME and VERSION in setup.py, whichever is the last parameter is the one that takes effect. The first one gets replaced by a default value.

Swagger-codegen version

3.0.22

Command line used for generation

The following invocation...

docker run --rm -v ${TARGET_DIR}:/local/path swaggerapi/swagger-codegen-cli-v3:3.0.22 generate \
  -i /local/path/input.json \
  -l python \
  -o /local/path/package_directory \
  -DpackageVersion=X.Y.Z \
  -DpackageName=my_package_name

produces these values in setup.py:

NAME = "my_package_name"
VERSION = "1.0.0"     # This is a default value

On the other hand, if I swap the order of -DpackageName and -DpackageVersion in the previous invocation so that the version comes last, setup.py contains these values:

NAME = "swagger-client"     # This is a default value
VERSION = "X.Y.Z"

Reproduce the Docker generation command from the issue with both -DpackageName and -DpackageVersion values, then inspect the Python generator or template responsible for the generated setup.py. Verify that changing the parameter order no longer replaces either value with its default, using the generated NAME and VERSION as the completion check.