build/rpms: fix kubeadm rpm

Change #61633 doesn't seem quite correct, and breaks bazel builds.
This patch makes sure that:
- there is no conflict between directory files and build targets
- rpm files are properly packaged after being installed

build/rpms/BUILD

@@ -31,6 +31,7 @@ pkg_rpm(
     changelog = "//:CHANGELOG.md",
     data = [
         "10-kubeadm.conf",
+        "kubelet.env",
         "//cmd/kubeadm",
     ],
     spec_file = "kubeadm.spec",

build/rpms/kubeadm.spec

@@ -16,10 +16,12 @@ Command-line utility for deploying a Kubernetes cluster.
 install -m 755 -d %{buildroot}%{_bindir}
 install -m 755 -d %{buildroot}%{_sysconfdir}/systemd/system/
 install -m 755 -d %{buildroot}%{_sysconfdir}/systemd/system/kubelet.service.d/
+install -m 755 -d %{buildroot}%{_sysconfdir}/sysconfig/
 install -p -m 755 -t %{buildroot}%{_bindir} kubeadm
 install -p -m 755 -t %{buildroot}%{_sysconfdir}/systemd/system/kubelet.service.d/ 10-kubeadm.conf
-install -p -m 755 -t %{buildroot}%{_sysconfdir}/sysconfig/ kubelet
+install -p -m 755 -T kubelet.env %{buildroot}%{_sysconfdir}/sysconfig/kubelet
 
 %files
 %{_bindir}/kubeadm
 %{_sysconfdir}/systemd/system/kubelet.service.d/10-kubeadm.conf
+%{_sysconfdir}/sysconfig/kubelet