layer.conf: fix parse
layer.conf: fix parse

after meta-systemd commit [1] the following error was thrown during parsing:

ERROR: Unable to parse /home/Superandy/data/oe-core/sources/meta-raspberrypi/conf/layer.conf:
Failure expanding variable BBFILES, expression was
...
which triggered exception NameError: name 'base_contains' is not defined

[1] http://cgit.openembedded.org/meta-openembedded/commit/?id=3c21a46020bd0816579648f684c41dbd6333583e

Signed-off-by: Andreas Müller <d72a15aaaca3a7afa855175c72dc8d2e05931e32@googlemail.com>
Signed-off-by: Andrei Gherzan <8dc7c09356db0b1762fb140617d7375c0a5a4131@gherzan.ro>

gbraad/yocto-meta-raspi,hwh7/meta-raspberrypi,agherzan/meta-raspberrypi,d21d3q/meta-raspberrypi,wware/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,kovrov/meta-raspberrypi,schnitzeltony/meta-raspi-light,protochron/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,thiagoss/meta-raspberrypi,martiert/meta-raspberrypi,pficheux/meta-raspberrypi,VCTLabs/meta-raspberrypi,ajlennon/meta-raspberrypi,pficheux/meta-raspberrypi,leon-anavi/meta-raspberrypi-testsand,kovrov/meta-raspberrypi,git4vijay/meta-raspberrypi,ThomArmax/meta-raspberrypi,VCTLabs/meta-raspberrypi,rfbsoft/polievanie_meta-raspberrypi,schnitzeltony/meta-raspberrypi,thiagoss/meta-raspberrypi,MCherifiOSS/meta-raspberrypi,git4vijay/meta-raspberrypi2,rofehr/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,MCherifiOSS/s-osg-meta-raspberrypi,agherzan/meta-raspberrypi,git4vijay/meta-raspberrypi,cocoonlife/meta-raspberrypi,agherzan/meta-raspberrypi,rofehr/meta-raspberrypi,rofehr/meta-raspberrypi,kraj/meta-raspberrypi,ThomArmax/meta-raspberrypi,amirna2/meta-raspberry,MCherifiOSS/s-osg-meta-raspberrypi,rfbsoft/polievanie_meta-raspberrypi,schnitzeltony/meta-raspi-light,rofehr/meta-raspberrypi,kraj/meta-raspberrypi,MCherifiOSS/s-osg-meta-raspberrypi,d21d3q/meta-raspberrypi,git4vijay/meta-raspberrypi2,pficheux/meta-raspberrypi,agherzan/meta-raspberrypi,leon-anavi/meta-raspberrypi-testsand,ajlennon/meta-raspberrypi,schnitzeltony/meta-raspberrypi,rfbsoft/polievanie_meta-raspberrypi,hwh7/meta-raspberrypi,wware/meta-raspberrypi,readysteadygo2006/meta-raspberrypi,thiagoss/meta-raspberrypi,ajlennon/meta-raspberrypi,hwh7/meta-raspberrypi,agherzan/meta-raspberrypi,d21d3q/meta-raspberrypi,amirna2/meta-raspberry,leon-anavi/meta-raspberrypi-testsand,gbraad/yocto-meta-raspi,amirna2/meta-raspberry,hwh7/meta-raspberrypi,toolmmy/meta-raspberrypi,protochron/meta-raspberrypi,VCTLabs/meta-raspberrypi,LocutusOfBorg/meta-raspberrypi,pficheux/meta-raspberrypi,leon-anavi/meta-raspberrypi,cocoonlife/meta-raspberrypi,git4vijay/meta-raspberrypi,schnitzeltony/meta-raspberrypi,MCherifiOSS/meta-raspberrypi,rfbsoft/polievanie_meta-raspberrypi,martiert/meta-raspberrypi,d21d3q/meta-raspberrypi,leon-anavi/meta-raspberrypi,VCTLabs/meta-raspberrypi,git4vijay/meta-raspberrypi2,ThomArmax/meta-raspberrypi,kraj/meta-raspberrypi,thiagoss/meta-raspberrypi,toolmmy/meta-raspberrypi,kovrov/meta-raspberrypi,readysteadygo2006/meta-raspberrypi,leon-anavi/meta-raspberrypi,ajlennon/meta-raspberrypi,git4vijay/meta-raspberrypi,gbraad/yocto-meta-raspi,toolmmy/meta-raspberrypi,toolmmy/meta-raspberrypi,agherzan/meta-raspberrypi,gbraad/yocto-meta-raspi,git4vijay/meta-raspberrypi2,leon-anavi/meta-raspberrypi-testsand,MCherifiOSS/s-osg-meta-raspberrypi,ThomArmax/meta-raspberrypi