move dir fix parsl_coprocess.py

[colinthomas-z80]

Description

Issue resolving relative task directory

Fixes

#2914

Type of change

• Bug fix

[benclifford]

This is/should be the output of:

   The parsl coprocess script is machine generated and checked into version control. The source for this is parsl/executors/workqueue/parsl_coprocess_stub.py and the command to turn the stub into the coprocess script is:
    poncho_package_serverize --src parsl/executors/workqueue/parsl_coprocess_stub.py --function run_parsl_task --dest parsl/executors/workqueue/parsl_coprocess.py --version work_queue

right?

[colinthomas-z80]

I believe so, although I did manually make those changes. If I generate it with my installation the fix is present as well.