local.conf: add dist feed packages to RM_WORK_EXCLUDE
local.conf: add dist feed packages to RM_WORK_EXCLUDE

Exclude the dist feed packages from rm_work. This allows the Jenkins
pipeline to us the ``deploy-ipks`` directory to authoritatively
determine which IPKs belong in the dist feed.

Any future dist feed recipes should also be excluded for the same
reasons.

Signed-off-by: Alex Stewart <04cdb2793e4fb0120cc30d1c823099f3862701f4@ni.com>
Acked-by: Haris Okanovic <4f2c24956fa4a8756878315db434b9fed29fa615@ni.com>
Natinst-ReviewBoard-ID: 312873

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt