MFC r285275 (only the part that fixes PR 199568):

Obtain proper capsicum rights for dump files so rotation of such files works when requested. This is equivalent to cherry picking the following upstream commits:

commit c6d472bf63488b0c2ab7ab9f4b32c68dd2c8ea2b
commit f08eb851eedf9775e6485ab75c0d8cf8d1306be6
commit d83a284abc80d3d09f6bddd087760bb1b01d9cc7

PR: 199568
Approved by: re