syslog-ng: add UPDATE_ALTERNATIVE for syslog-service
syslog-ng: add UPDATE_ALTERNATIVE for syslog-service

Use ALTERNATIVE mechanism in OE to manage the syslog service to
avoid conflicts with other syslog implementations like rsyslog
or busybox.

Signed-off-by: Steffen Sledz <2e29ea0aa1503a723683d9a206c59d4c02f6bad0@dresearch-fe.de>
Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

fredcadete/meta-openembedded,rehsack/meta-openembedded,schnitzeltony/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,mrchapp/meta-openembedded,RedFIR/meta-openembedded,amery/meta-openembedded,amery/meta-openembedded,victronenergy/meta-openembedded,fredcadete/meta-openembedded,lgirdk/meta-openembedded,openembedded/meta-openembedded,RedFIR/meta-openembedded,amery/meta-openembedded,schnitzeltony/meta-openembedded,amery/meta-openembedded,amery/meta-openembedded,victronenergy/meta-openembedded,fredcadete/meta-openembedded,shr-distribution/meta-oe,rehsack/meta-openembedded,moto-timo/meta-openembedded,fredcadete/meta-openembedded,kraj/meta-openembedded,amery/meta-openembedded,mrchapp/meta-openembedded,VCTLabs/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,VCTLabs/meta-openembedded,openembedded/meta-openembedded,moto-timo/meta-openembedded,openembedded/meta-openembedded,VCTLabs/meta-openembedded,rehsack/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,kraj/meta-openembedded,VCTLabs/meta-openembedded,rehsack/meta-openembedded,schnitzeltony/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,amery/meta-openembedded,mrchapp/meta-openembedded,schnitzeltony/meta-openembedded,RedFIR/meta-openembedded,moto-timo/meta-openembedded,schnitzeltony/meta-openembedded,victronenergy/meta-openembedded,openembedded/meta-openembedded,fredcadete/meta-openembedded,shr-distribution/meta-oe,lgirdk/meta-openembedded,rehsack/meta-openembedded,RedFIR/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,VCTLabs/meta-openembedded,lgirdk/meta-openembedded,fredcadete/meta-openembedded,kraj/meta-openembedded,lgirdk/meta-openembedded,rehsack/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,mrchapp/meta-openembedded,schnitzeltony/meta-openembedded,RedFIR/meta-openembedded,RedFIR/meta-openembedded,mrchapp/meta-openembedded,shr-distribution/meta-oe,shr-distribution/meta-oe,mrchapp/meta-openembedded,VCTLabs/meta-openembedded,shr-distribution/meta-oe,moto-timo/meta-openembedded,lgirdk/meta-openembedded,fredcadete/meta-openembedded,openembedded/meta-openembedded,mrchapp/meta-openembedded,amery/meta-openembedded,openembedded/meta-openembedded,victronenergy/meta-openembedded,openembedded/meta-openembedded,kraj/meta-openembedded,kraj/meta-openembedded,victronenergy/meta-openembedded,kraj/meta-openembedded,RedFIR/meta-openembedded,RedFIR/meta-openembedded,shr-distribution/meta-oe,shr-distribution/meta-oe,VCTLabs/meta-openembedded,kraj/meta-openembedded,victronenergy/meta-openembedded,victronenergy/meta-openembedded,rehsack/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,shr-distribution/meta-oe,lgirdk/meta-openembedded,fredcadete/meta-openembedded,schnitzeltony/meta-openembedded,moto-timo/meta-openembedded,VCTLabs/meta-openembedded,lgirdk/meta-openembedded,openembedded/meta-openembedded