Add kubernets.client state

Add kubernetes.client state that allows to manage kubectl resources.
This patch adds support to manage node lables.

  kubernetes:
    client:
      enabled: true
      apiserver:
        insecure_address: 0.0.0.0
        insecure_port: 8080
      resources:
        enabled: true
        label:
          test:
            value: enabled
            node:
             - cmp1
             - cmp2
            enabled: true
            key: mylabel

Change-Id: Id9b3b21467ccc390977d47aba5034ac26e24502b
Related-Prod: PROD-27977
diff --git a/README.rst b/README.rst
index 263d1a3..3cf026d 100644
--- a/README.rst
+++ b/README.rst
@@ -1185,6 +1185,29 @@
                   test:
                     kind: User
 
+Manage client (kubectl resources)
+Assign labels to nodes:
+
+.. code-block:: yaml
+
+    kubernetes:
+      client:
+        enabled: true
+        apiserver:
+          insecure_address: 0.0.0.0
+          insecure_port: 8080
+        resources:
+          enabled: true
+          label:
+            test:
+              value: enabled
+              status: 'present'
+              node:
+               - cmp1
+               - cmp2
+              enabled: true
+              key: mylabel
+
 More Information
 ================
 
diff --git a/kubernetes/client.sls b/kubernetes/client.sls
new file mode 100644
index 0000000..9c1c383
--- /dev/null
+++ b/kubernetes/client.sls
@@ -0,0 +1,33 @@
+{%- from "kubernetes/map.jinja" import client with context -%}
+{%- if client.enabled %}
+  {%- if client.get('resources', {}).get('enabled') %}
+
+    {%- for name,label in client.resources.get('label', {}).iteritems() %}
+
+      {%- if label.enabled %}
+        {%- if label.get('status', 'present') == 'present' %}
+          {%- for node in label.node %}
+# TODO(vsaienko) switch to kubernetes. salt module once kubernets-client python is packages and
+# awailable for installation.
+{{ name }}_{{ node }}:
+  k8s.label_present:
+    - name: {{ label.key }}
+    - value: {{ label.value }}
+    - node: {{ node }}
+    # TODO(vsaienko): move to profiles
+    - apiserver: http://{{ client.apiserver.insecure_address }}:{{ client.apiserver.insecure_port }}
+          {%- endfor %}
+
+        {%- elif label.get('status', 'present') == 'absent' %}
+          {%- for node in label.node %}
+{{ name }}_{{ node }}:
+  k8s.label_absent:
+    - name: {{ label.key }}
+    - node: {{ node }}
+    - apiserver: http://{{ client.apiserver.insecure_address }}:{{ client.apiserver.insecure_port }}
+          {%- endfor %} # endfor label.node.iteritems
+        {%- endif %} # endif label.present
+      {%- endif %} # endif label.enabled
+    {%- endfor %} # endfor client.resources.label
+  {%- endif %} # endif client.resources.enabled
+{%- endif %} # endif client.enabled
diff --git a/kubernetes/init.sls b/kubernetes/init.sls
index 22aad26..a882a97 100644
--- a/kubernetes/init.sls
+++ b/kubernetes/init.sls
@@ -10,4 +10,7 @@
 {%- if pillar.kubernetes.control is defined %}
 - kubernetes.control
 {%- endif %}
+{%- if pillar.kubernetes.client is defined %}
+- kubernetes.client
+{%- endif %}
 {%- endif %}
diff --git a/kubernetes/map.jinja b/kubernetes/map.jinja
index 615404c..3c3d4cb 100644
--- a/kubernetes/map.jinja
+++ b/kubernetes/map.jinja
@@ -111,6 +111,9 @@
     },
 }, merge=salt['pillar.get']('kubernetes:control')) %}
 
+{% set client = salt['grains.filter_by']({
+}, merge=salt['pillar.get']('kubernetes:client')) %}
+
 {%- set monitoring = salt['grains.filter_by']({
   'default': {
     'instance_minor_threshold_percent': 0.3,