create symlinks instead of copying binaries around
(cherry picked from commit 4fe0cf2aadb6294183c0f4ac5dd46094eb968555)
I missed to add cf-monitord along #1930
(cherry picked from commit 26e27fdc6a89128692a063d128e4cb342637ca2b)
rename failsafe to update #1936
(cherry picked from commit 84814eab02e225719bf22959d2b05b3cf353af99)