remove docker dependency from kubelet.service

It's incorrect for kubelet.service to depend on docker as
we no longer use docker as our container runtime.  Instead,
just wait for networking to be up.

The %patch directive is a little odd, as we're patching
the "contrib" directory which is actually unpacked from
a separate tarball.

Change-Id: I16a1aed98b15ac3d1fe3870ce01cc9237bdb3426
Closes-Bug: 1882604
Signed-off-by: Chris Friesen <chris.friesen@windriver.com>

kubernetes/kubernetes/centos/files/kubelet-service-remove-docker-dependency.patch

@@ -0,0 +1,15 @@
+diff --git a/contrib/init/systemd/kubelet.service b/contrib/init/systemd/kubelet.service
+index 1082bba..1fae395 100644
+--- a/contrib/init/systemd/kubelet.service
++++ b/contrib/init/systemd/kubelet.service
+@@ -1,8 +1,8 @@
+ [Unit]
+ Description=Kubernetes Kubelet Server
+ Documentation=https://kubernetes.io/docs/concepts/overview/components/#kubelet https://kubernetes.io/docs/reference/generated/kubelet/
+-After=docker.service
+-Requires=docker.service
++Wants=network-online.target
++After=network-online.target
+ 
+ [Service]
+ WorkingDirectory=/var/lib/kubelet

kubernetes/kubernetes/centos/kubernetes.spec

@@ -56,6 +56,7 @@ Source5:        kubelet-cgroup-setup.sh
 Source33:       genmanpages.sh
 
 Patch1: 0001-Fix-pagesize-check-to-allow-for-options-already-endi.patch
+Patch2: kubelet-service-remove-docker-dependency.patch
 
 # It obsoletes cadvisor but needs its source code (literally integrated)
 Obsoletes:      cadvisor
@@ -841,6 +842,7 @@ Kubernetes client tools like kubectl
 # copy contrib folder
 mkdir contrib
 cp -r ../%{con_repo}-%{con_commit}/init contrib/.
+%patch2 -p1
 
 #src/k8s.io/kubernetes/pkg/util/certificates
 # Patch the code to remove eliptic.P224 support