rpm: the regression-tests sub-package needs "bc"

split-brain-favorite-child-policy.t runs "bc" for comparing times in
nanosecond precision. The glusterfs-regression-tests sub-package can be
used to install environments for testing, but "bc" is not installed.
This causes test failures.

BUG: 1442145
Change-Id: Iaf9dcb3a8488dea7162873ee40ae445843a35d04
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: https://review.gluster.org/17060
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>

glusterfs.spec.in

@@ -477,7 +477,7 @@ Requires:         %{name}-server%{?_isa} = %{version}-%{release}
 Requires:         lvm2 >= 2.02.89
 Requires:         perl(App::Prove) perl(Test::Harness) gcc util-linux-ng
 Requires:         python2 attr dbench file git libacl-devel net-tools
-Requires:         nfs-utils xfsprogs yajl psmisc
+Requires:         nfs-utils xfsprogs yajl psmisc bc
 
 %description regression-tests
 The Gluster Test Framework, is a suite of scripts used for
@@ -1256,6 +1256,9 @@ exit 0
 %endif
 
 %changelog
+* Thu Apr 13 2017 Niels de Vos <ndevos@redhat.com>
+- the -regression-tests sub-package needs "bc" for some tests (#1442145)
+
 * Mon Mar 20 2017 Niels de Vos <ndevos@redhat.com>
 - Drop dependency on psmisc, pkill is used instead of killall (#1197308)