Add conntrack as a dependency of kubelet

FIXES: https://github.com/kubernetes/kubeadm/issues/1287

- This commit integrates the work of @jdetiber to fix bazel build
//build/rpms and also addresses an issue where not all common versions
of rpmbuild have the %{_sysctldir} macro.

- Since that macro points to /usr/lib/sysctl.d this commit just points
directly to that dir.

- This also adds conntrack as a dependency of kubelet for both rpm and
deb builds.

Signed-off-by: Duffie Cooley <dcooley@heptio.com>

build/debs/BUILD

@@ -148,14 +148,15 @@ k8s_deb(
 k8s_deb(
     name = "kubelet",
     depends = [
-        "iptables (>= 1.4.21)",
+        "conntrack",
-        "kubernetes-cni (>= 0.6.0)",
-        "iproute2",
-        "socat",
-        "util-linux",
-        "mount",
         "ebtables",
         "ethtool",
+        "iproute2",
+        "iptables (>= 1.4.21)",
+        "kubernetes-cni (>= 0.6.0)",
+        "mount",
+        "socat",
+        "util-linux",
     ],
     description = """Kubernetes Node Agent
 The node agent of Kubernetes, the container cluster manager
@@ -168,7 +169,7 @@ k8s_deb(
     depends = [
         "kubelet (>= 1.8.0)",
         "kubectl (>= 1.8.0)",
-        "kubernetes-cni (>= 0.5.1)",
+        "kubernetes-cni (>= 0.6.0)",
         "cri-tools (>= 1.11.0)",
     ],
     description = """Kubernetes Cluster Bootstrapping Tool

build/rpms/kubeadm.spec

@@ -5,7 +5,7 @@ License: ASL 2.0
 Summary: Container Cluster Manager - Kubernetes Cluster Bootstrapping Tool
 Requires: kubelet >= 1.8.0
 Requires: kubectl >= 1.8.0
-Requires: kubernetes-cni >= 0.5.1
+Requires: kubernetes-cni >= 0.6.0
 Requires: cri-tools >= 1.11.0
 
 URL: https://kubernetes.io
@@ -22,9 +22,9 @@ install -p -m 755 -t %{buildroot}%{_bindir} {kubeadm}
 install -p -m 644 -t %{buildroot}%{_sysconfdir}/systemd/system/kubelet.service.d/ {10-kubeadm.conf}
 install -p -m 644 -T {kubelet.env} %{buildroot}%{_sysconfdir}/sysconfig/kubelet
 mkdir -p %{buildroot}%{_libexecdir}/modules-load.d
-mkdir -p %{buildroot}%{_sysctldir}
+mkdir -p %{buildroot}/usr/lib/sysctl.d/
 install -p -m 0644 -t %{buildroot}%{_libexecdir}/modules-load.d/ {kubeadm.conf}
-install -p -m 0644 -t %{buildroot}%{_sysctldir} {50-kubeadm.conf}
+install -p -m 0644 -t %{buildroot}/usr/lib/sysctl.d/ {50-kubeadm.conf}
 
 %files
 %{_bindir}/kubeadm
@@ -32,4 +32,4 @@ install -p -m 0644 -t %{buildroot}%{_sysctldir} {50-kubeadm.conf}
 %{_sysconfdir}/sysconfig/kubelet
 %dir %{_libexecdir}/modules-load.d
 %{_libexecdir}/modules-load.d/kubeadm.conf
-%{_sysctldir}/50-kubeadm.conf
+/usr/lib/sysctl.d/50-kubeadm.conf

build/rpms/kubelet.spec

@@ -6,13 +6,14 @@ Summary: Container Cluster Manager - Kubernetes Node Agent
 
 URL: https://kubernetes.io
 
+Requires: conntrack
+Requires: ebtables
+Requires: ethtool
+Requires: iproute
 Requires: iptables >= 1.4.21
 Requires: kubernetes-cni >= 0.6.0
 Requires: socat
 Requires: util-linux
-Requires: ethtool
-Requires: iproute
-Requires: ebtables
 
 %description
 The node agent of Kubernetes, the container cluster manager.

build/rpms/kubernetes-cni.spec

@@ -3,7 +3,6 @@ Version: OVERRIDE_THIS
 Release: 00
 License: ASL 2.0
 Summary: Container Cluster Manager - CNI plugins
-
 URL: https://kubernetes.io
 
 %description