[oe] [meta-python][v2][rocko][PATCH 1/8] python-twisted: restore RDEPENDS on -news for py2

[Mark Asselstine]

V1 of this series was incomplete. Thus following up with a V2 which
includes additional cherry-picks from master. Cherry-pick commit IDs
are listed in the temporary comment section of the individual commits.

When building images using rocko that include python-twisted you will
get an error:
nothing provides python3-twisted-news needed by python3-twisted-17.9.0-r0.corei7_64

Basically upstream marked the -news plugin as unavailable in py3 (See
src/twisted/python/_setup.py -- notPortedModules). This leaves the
-news package empty, thus no RPM or similar is built and the
dependency can't be satisfied. Backporting patches 1,3-8 fix this
issue. Patch 1 is the main fix but also introduces missing
dependencies, which are added in patches 3-8. However, the -news
package is still available in py2 thus patch 2 re-adds this to the
RDEPENDS of ${PN} (the super package which can be used if you don't
want to select individual component packages).

Patch 2 should also be applied to master.

Mark