actors.get_client() issue

[JoshuaUrrutia]

actors.get_client() returns a base url with a trailing slash, which doesn't work for listing endpoints, ex:

from tapipy import actors, util, errors
from tapipy.tapis import Tapis

def main() -> None:
    context = actors.get_context()  
    t = actors.get_client()
    files = t.files.listFiles(systemId='frontera', path='/work2/05369/urrutia/frontera/inputs/')

Traceback (most recent call last):
  File "/opt/reactor.py", line 47, in <module>
    main()
  File "/opt/reactor.py", line 18, in main
    files=t.files.listFiles(systemId='frontera', path='/work2/05369/urrutia/frontera/inputs/')
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/tapipy/tapis.py", line 1218, in __call__
    raise errors.NotFoundError(msg=error_msg, version=version, request=r, response=resp)
tapipy.errors.NotFoundError: message: HTTP 404 Not Found

(and indeed that directory exists on this tenant)

We'll need to strip away the trailing slash on _abaco_api_server, ex:

"_abaco_api_server": "https://tacc.tapis.io/",

https://github.com/tapis-project/tapipy/blob/main/tapipy/actors.py#L23C70-L23C70

[JoshuaUrrutia]

see:
#58