Clean up specfile header

Prefer `%global` over `%define` and do it earlier.

packaging/template.spec

+%if ( 0%{?rhel} && 0%{?rhel} < 7 ) || ( 0%{?centos} && 0%{?centos} < 7 )
+%global pspkg procps
+%else
+%global pspkg procps-ng
+%endif
+
 Name:           __MKIT_PROJ_PKGNAME__
 Version:        __MKIT_PROJ_VERSION__
 Release:        1%{?dist}
 URL:            __MKIT_PROJ_VCS_BROWSER__
 Source0:        %{name}-%{version}.tar.gz
 BuildArch:      noarch
-
-%if ( 0%{?rhel} && 0%{?rhel} < 7 ) || ( 0%{?centos} && 0%{?centos} < 7 )
-%define pspkg procps
-%else
-%define pspkg procps-ng
-%endif
-
 BuildRequires:  perl
 BuildRequires:  %{pspkg}