Add missing requires on python3-setuptools

/usr/bin/ttx (and other tools that fonttools installs in /usr/bin) do
"from pkg_resources import load_entry_point" which is from setuptools.

This fixes sazanami-fonts FTBFS.

https://bugzilla.redhat.com/show_bug.cgi?id=1676290

fonttools.spec

@@ -7,13 +7,14 @@ OpenType, AFM and to an extent Type 1 and some Mac-specific formats.
 
 Name:           fonttools
 Version:        3.37.3
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Tools to manipulate font files
 License:        MIT
 URL:            https://github.com/%{name}/%{name}/
 Source0:        https://github.com/%{name}/%{name}/archive/%{version}.tar.gz#/%{pypi_name}-%{version}.zip
 
 Requires:       python3-fonttools
+Requires:       python3-setuptools
 BuildArch:      noarch
 Provides:       ttx = %{version}-%{release}
 
@@ -79,6 +80,9 @@ sed -i '1d' Lib/fontTools/mtiLib/__init__.py
 %{python3_sitelib}/%{name}-%{version}-py3.?.egg-info
 
 %changelog
+* Tue Feb 12 2019 Kalev Lember <klember@redhat.com> - 3.37.3-2
+- Add missing requires on python3-setuptools (#1676290)
+
 * Wed Feb 06 2019 Parag Nemade <pnemade AT redhat DOT com> - 3.37.3-1
 - Update to 3.37.3 version (#1672607)