Ignore trailing slashes for server url

[bacher09]

kubectl by default ignores trailing slashes for server url, but python client isn't. For example if you have server URL like this: https://kubernetes.example:8443/ (with trailing slash), kubectl will work, but python client will fail with kubernetes.client.rest.ApiException: (404).

I think it's nice to have consistent behavior across all clients.

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[tomplus]

I'm not sure if we should modify this file. It's generated by swagger-codegen (see the preamble of this file). @karlbunch suggested different solution (#388) - to fix the value when configuration object is created. How does it look?

[bacher09]

Haven't seen that notice. I thought about fixing this in configuration handling code too, but then rejected that idea. This approach isn't solving issue completely, since there is possibility that user will create configuration object manually (in python code).