openpli.conf: Allow DISTRO_FEED_URI override
openpli.conf: Allow DISTRO_FEED_URI override

Allows to override DISTRO_FEED_URI in local.conf
(rebuild distro-feed-configs if you change the URI)

SIFTeam/openembedded,nx111/openembeded_openpli2.1_nx111,SIFTeam/openembedded,libo/openembedded,openpli-arm/openembedded,SIFTeam/openembedded,openpli-arm/openembedded,nx111/openembeded_openpli2.1_nx111,SIFTeam/openembedded,libo/openembedded,BlackPole/bp-openembedded,nx111/openembeded_openpli2.1_nx111,libo/openembedded,BlackPole/bp-openembedded,BlackPole/bp-openembedded,libo/openembedded,BlackPole/bp-openembedded,openpli-arm/openembedded,BlackPole/bp-openembedded,nx111/openembeded_openpli2.1_nx111,BlackPole/bp-openembedded,SIFTeam/openembedded,openpli-arm/openembedded,nx111/openembeded_openpli2.1_nx111,BlackPole/bp-openembedded,libo/openembedded,openpli-arm/openembedded,nx111/openembeded_openpli2.1_nx111,libo/openembedded,libo/openembedded,SIFTeam/openembedded,openpli-arm/openembedded,SIFTeam/openembedded,openpli-arm/openembedded,nx111/openembeded_openpli2.1_nx111,nx111/openembeded_openpli2.1_nx111