This change fixes a bug where the default values that are
populated during an `airshipctl config init` were getting
mixed in with user specified values at runtime. For example,
a user with two contexts defined in their airship config
file would actually see a third phantom context with default
values in the output of `airshipctl config get-context`.
Also fixes a number of the config cmd and pkg unit tests that
were affected by this bug.
Change-Id: Iac591d4c2a616090028eb730576478edefb82544
Closes: #447
585af5a516