Add CAN test tools image feature

Add can-test-tools image feature and use it to remove duplication
of adding the tools to various images.

Bug-AGL: SPEC-5083

Change-Id: I4f4eec87eb26825f69f056183829feab7d90caf5
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/29700
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
ci-image-build: Jenkins Job builder account
Tested-by: Jenkins Job builder account
ci-image-boot-test: Jenkins Job builder account