All macros should be namespaced to lf-infra-

Fixes create-netrc and gpg-verify-git-signature to be namespaced into
lf-infra- as all of the macros should be so that we can more easily
bring over current macros that projects may have that make sense in a
global sense without stomping on current definitions. This will allow us
to more gradually migrate onto global macros when it makes sense.

Change-Id: I419468cc5826490736b94d1f3f2041f11f0b9470
Signed-off-by: Andrew Grimberg <agrimberg@linuxfoundation.org>