meta-networking: Update layer dependency information

since python recipes are now spun out into its own layer
and there are recipes like crda which depend on M2Crypto
python module, of which the recipe is now moved from meta-oe
into meta-python, we need to express this change of layers
otherwise if you are not using meta-python then you end up
with errors e.g.

Nothing PROVIDES 'python-m2crypto-native' (but
meta-networking/recipes-connectivity/crda/crda_1.1.3.bb
DEPENDS on or otherwise requires it).

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>