containerd2: provide the capabilities of old-package containerd and obsolete it (#12063)

As containerd2 package is introduced to azurelinux, and containerd2 now is default for AZL 3.0 preview in AKS. There will be conflicts when users install moby-engine in a VM or an AKS node with containerd2 installed as moby-engine requires containerd package. This PR adds "Provides/Obsoletes: containerd" to shift all installs of containerd to containerd2 and resolve the conflicts while installing moby-engine.

Author: liunan-ms

SPECS/containerd2/containerd2.spec

@@ -5,7 +5,7 @@
 Summary: Industry-standard container runtime
 Name: %{upstream_name}2
 Version: 2.0.0
-Release: 4%{?dist}
+Release: 5%{?dist}
 License: ASL 2.0
 Group: Tools/Container
 URL: https://www.containerd.io
@@ -27,6 +27,14 @@ BuildRequires: systemd-rpm-macros
 
 Requires: runc >= 1.2.2
 
+# This package replaces the old name of containerd
+Provides: containerd = %{version}-%{release}
+Obsoletes: containerd < %{version}-%{release}
+
+# This package replaces the old name of moby-containerd
+Provides: moby-containerd = %{version}-%{release}
+Obsoletes: moby-containerd < %{version}-%{release}
+
 %description
 containerd is an industry-standard container runtime with an emphasis on
 simplicity, robustness and portability. It is available as a daemon for Linux
@@ -81,6 +89,9 @@ fi
 %dir /opt/containerd/lib
 
 %changelog
+* Mon Mar 03 2025 Nan Liu <liunan@microsoft.com> - 2.0.0-5
+- Add "Provides/Obsoletes:" to shift all installs of containerd and moby-containerd to containerd2
+
 * Mon Feb 03 2025 Mitch Zhu <mitchzhu@microsoft.com> - 2.0.0-4
 - Fix ptest in tardev-snapshotter support patch