Add UCX 1.6.0 (#12089)
Add UCX 1.6.0 (#12089)

https://github.com/openucx/ucx/releases/tag/v1.6.0
Released 2019-07-17

Verification builds on LANL Darwin x86_64 and Power9:

dantopa@cn2037:pr-update-ucx.spack $ date
Mon Jul 22 17:04:14 MDT 2019

dantopa@cn2037:pr-update-ucx.spack $ pwd
/scratch/users/dantopa/repos/spack/pr-update-ucx.spack

dantopa@cn2037:pr-update-ucx.spack $ spack find -ldf ucx

==> 2 installed packages
-- linux-centos7-x86_64 / gcc@4.8.5 -----------------------------
w7fp4n6    ucx@1.6.0%gcc
tt2hkol        ^numactl@2.0.12%gcc
srhy7ry        ^rdma-core@20%gcc
kvgvhpv            ^libnl@3.3.0%gcc

-- linux-rhel7-ppc64le / gcc@4.8.5 ------------------------------
cji3ce7    ucx@1.6.0%gcc
pmgndwh        ^numactl@2.0.12%gcc
qymrwx6        ^rdma-core@20%gcc
2263pm5            ^libnl@3.3.0%gcc

Signed-off-by: Daniel Topa <1d209603f94db09af1ee3676c79593db2cefbfaf@lanl.gov>
LLNL/spack,LLNL/spack,LLNL/spack,iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack