admin/meta-packages: use singularity-ce on rhel clones

Previously EPEL had the apptainer package which had a 'Provides:
singularity'. This was removed: https://pagure.io/epel/issue/214

The changes the OpenHPC meta-package to use the package singularity-ce
on RHEL clones.

Signed-off-by: Adrian Reber <areber@redhat.com>

components/admin/meta-packages/SPECS/meta-packages.spec

@@ -86,14 +86,14 @@ Requires:  libicu
 Requires:  libunwind
 Requires:  numactl
 Requires:  python3
-Requires:  singularity
 %if 0%{?rhel}
 Requires:  cairo-devel
 Requires:  libpciaccess
 Requires:  libseccomp
 Requires:  librdmacm
 Requires:  NetworkManager
 Requires:  perl-interpreter
+Requires:  singularity-ce
 %ifarch x86_64
 Requires:  libpsm2
 %endif
@@ -104,6 +104,7 @@ Requires:  libpciaccess0
 Requires:  libatomic1
 Requires:  librdmacm1
 Requires:  libicu-suse65_1
+Requires:  singularity
 %ifarch x86_64
 Requires:  libpsm2-2
 %endif
@@ -354,7 +355,12 @@ Collection of python3 related library builds for use with GNU compiler toolchain
 %package -n %{PROJ_NAME}-%{compiler_family}-runtimes
 Summary:   OpenHPC runtimes for GNU
 Requires:  charliecloud%{PROJ_DELIM}
+%if 0%{?suse_version}
 Requires:  singularity
+%endif
+%if 0%{?rhel}
+Requires:  singularity-ce
+%endif
 %description -n %{PROJ_NAME}-%{compiler_family}-runtimes
 Collection of runtimes for use with GNU compiler toolchain