hwloc: move to minimum 2.1.0

to match up with PMIx and PRRTe dependencies

Signed-off-by: Howard Pritchard <howardp@lanl.gov>

Author: hppritcha

VERSION

@@ -27,7 +27,7 @@ mpi_standard_subversion=1
 # List in x.y.z format.
 pmix_min_version=4.2.0
 prte_min_version=3.0.0
-hwloc_min_version=1.11.0
+hwloc_min_version=2.1.0
 event_min_version=2.0.21
 automake_min_version=1.13.4
 autoconf_min_version=2.69.0