iopenmpi-nightly-tarball.sh: make v1.10 tarballs

contrib/build-server/openmpi-nightly-tarball.sh

@@ -27,7 +27,7 @@ script_dir=/u/mpiteam/scripts
 # The tarballs to make
 if [ $# -eq 0 ] ; then
     # We're no longer ever checking the 1.0 - 1.6 branches anymore
-    branches="master v1.8"
+    branches="master v1.8 v1.10"
 else
     branches=$@
 fi
@@ -131,4 +131,4 @@ for tarball in `cat $pending_coverity`; do
         --make-args=-j8 \
         --configure-args="$coverity_configure_args"
 done
-rm -f $pending_coverity
+rm -f $pending_coverity