led-manager: Install led-set-all-groups-asserted.sh to /usr/bin

Latest commit in phosphor-led-manager put a bash script
led-set-all-groups-asserted.sh. This commit packages it
to be installed in /usr/bin and also adds right RDEPENDS

(From meta-phosphor rev: 3c3dfb751869331d162790a4523257f6a383eafe)

Change-Id: I3c37b1eb22eea9fd2294be978413f1100a402a07
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>