Remove ChannelFinder base url with parameter

[dxmaxwell]

There is a hard-coded Channel Finder URL here.

I think this should be a configurable parameter?

[shroffk]

@mskinner5278 can you change the url to use the base url parameter

[dxmaxwell]

@mskinner5278 I looked at the above changes to address this issue and I think it is incorrect.

I think it should be:

self.__session.mount(self.__baseURL, Ssl3HttpAdapter())

instead of

self.__session.mount(BaseURL, Ssl3HttpAdapter())

[shroffk]

Addressed in PR #19