Adding 'Requires: hostname'

cloud-init requires hostname command to be present it will stack trace,
according to the BZ #1915616.

Signed-off-by: Eduardo Otubo <otubo@redhat.com>

cloud-init.spec

@@ -1,6 +1,6 @@
 Name:           cloud-init
 Version:        20.4
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Cloud instance init scripts
 License:        ASL 2.0 or GPLv3
 URL:            http://launchpad.net/cloud-init
@@ -60,6 +60,7 @@ BuildRequires:  python3-six
 # https://bugs.launchpad.net/cloud-init/+bug/1721573
 BuildRequires:  /usr/bin/dnf
 
+Requires:       hostname
 Requires:       e2fsprogs
 Requires:       iproute
 Requires:       python3-libselinux
@@ -178,6 +179,9 @@ python3 -m pytest tests/unittests
 
 
 %changelog
+* Wed Feb 03 2021 Eduardo Otubo <otubo@redhat.com> - 20.4-3
+- Adding requirement hostname to specfile [bz#1925118]
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 20.4-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild