meta-agl-profile-core: Add dev-mapping-ci recipe

meta-agl-profile-core: Add dev-mapping-ci recipe

Add a dev-mapping-ci recipe that installs a CI specific version of
/etc/dev-mapping.conf for the agl-service-can-low-level binding.
Additionally, the now required "j1939" bus mapping has been added
to the default dev-mapping recipe's conf file.

To enable use of the new recipe, the definition of the variable
PREFERRED_RPROVIDER_virtual/low-can-dev-mapping has been updated in
poky-agl.conf to enables it based on the AGLCI DISTRO_FEATURE.

Bug-AGL: SPEC-3756

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Ia980ed5e556bad9097ca0c305d1e26b21b10a9ac
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/25908
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-boot-test: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>