Remove Suggests for unsupported qemu drivers in RHEL

resolves: rhbz#1975703

(cherry picked from commit 2be2382c8f897c33867a6cc86cb5e4788957a4c1)

libguestfs.spec

@@ -61,7 +61,7 @@ Summary:       Access and modify virtual machine disk images
 Name:          libguestfs
 Epoch:         1
 Version:       1.45.6
-Release:       7%{?dist}
+Release:       8%{?dist}
 License:       LGPLv2+
 
 # Build only for architectures that have a kernel
@@ -335,11 +335,15 @@ Requires:      /usr/bin/qemu-img
 
 # For qemu direct and libvirt backends.
 Requires:      qemu-kvm-core
+%if !0%{?rhel}
 Suggests:      qemu-block-curl
 Suggests:      qemu-block-gluster
 Suggests:      qemu-block-iscsi
+%endif
 Suggests:      qemu-block-rbd
+%if !0%{?rhel}
 Suggests:      qemu-block-ssh
+%endif
 Recommends:    libvirt-daemon-config-network
 Requires:      libvirt-daemon-driver-qemu >= 7.1.0
 Requires:      libvirt-daemon-driver-secret
@@ -1119,6 +1123,9 @@ rm ocaml/html/.gitignore
 
 
 %changelog
+* Thu Jun 24 2021 Richard W.M. Jones <rjones@redhat.com> - 1:1.45.6-8
+- Remove Suggests for unsupported qemu drivers in RHEL (RHBZ#1975703)
+
 * Wed Jun 23 2021 Richard W.M. Jones <rjones@redhat.com> - 1:1.45.6-7
 - Bump and rebuild
   resolves: rhbz#1975315