trim trailing slash for urls

[russorat]

When using a url without a trailing slash, everything works fine:

client = InfluxDBClient(url="https://us-west-2-1.aws.cloud2.influxdata.com", token=token, org=org, debug=True)

But when adding a trailing slash to the url:
client = InfluxDBClient(url="https://us-west-2-1.aws.cloud2.influxdata.com/", token=token, org=org, debug=True)

the error that comes back is HTTP response body: {"code":"not found","message":"path not found"} when I use InfluxDB cloud.

For localhost, without a slash, i get a 200, but with a slash, i get a 204.

IMO, we should detect and trim the trailing slash from the connection urls.