Update Python 2 dependency declarations to new packaging standards

sbd.spec

@@ -26,7 +26,7 @@ License:        GPLv2+
 Group:          System Environment/Daemons
 Version:        1.2.1
 #Release:        0.%{buildnum}.%{shortcommit}.git%{?dist}
-Release:        %{buildnum}%{?dist}.1
+Release:        %{buildnum}%{?dist}.2
 Url:            https://github.com/%{github_owner}/%{name}
 Source0:        https://github.com/%{github_owner}/%{name}/archive/%{commit}/%{name}-%{commit}.tar.gz
 BuildRequires:  autoconf
@@ -40,7 +40,7 @@ BuildRequires:  libtool
 BuildRequires:  libuuid-devel
 BuildRequires:  libxml2-devel
 BuildRequires:  pkgconfig
-BuildRequires:  python-devel
+BuildRequires:  python2-devel
 Patch1:         sbd-no-storage-option.patch
 Patch2:         sbd-local-debug.patch
 Patch3:         sbd-pcmk-health.patch
@@ -112,6 +112,10 @@ install -m 644 src/sbd.sysconfig ${RPM_BUILD_ROOT}%{_sysconfdir}/sysconfig/sbd
 %doc COPYING
 
 %changelog
+* Sun Mar 18 2018 Iryna Shcherbina <ishcherb@redhat.com> - 1.2.1-4.2
+- Update Python 2 dependency declarations to new packaging standards
+  (See https://fedoraproject.org/wiki/FinalizingFedoraSwitchtoPython3)
+
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.1-4.1
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild