Create github client each time it's called.

This is part of an integration refactor. When using integrations we need
to create a client depending on the project that you are accessing so
refactor just this part to use a function rather than a property.

Change-Id: Ibe54c69c663d2160d34f34736689fe0420203c64
Signed-off-by: Jamie Lennox <jamielennox@gmail.com>
1 file changed