Add mtu for calico

Change-Id: I68b3a9f74d4b1d6d151ef699c532dde1a4d8eff4
diff --git a/README.rst b/README.rst
index f624f81..399315c 100644
--- a/README.rst
+++ b/README.rst
@@ -177,6 +177,7 @@
             allow_privileged: true
           network:
             engine: calico
+            mtu: 1500
             hash: fb5e30ebe6154911a66ec3fb5f1195b2
             private_ip_range: 10.150.0.0/16
             version: v0.19.0
@@ -225,6 +226,7 @@
             host: 10.0.175.100
           network:
             engine: calico
+            mtu: 1500
             hash: fb5e30ebe6154911a66ec3fb5f1195b2
             version: v0.19.0
           token:
@@ -347,6 +349,7 @@
       master:
         network:
           engine: calico
+          mtu: 1500
     # If you don't register master as node:
           etcd:
             members:
@@ -365,6 +368,7 @@
       pool:
         network:
           engine: calico
+          mtu: 1500
           etcd:
             members:
               - host: 10.0.175.101
@@ -382,6 +386,7 @@
       pool:
         network:
           engine: calico
+          mtu: 1500
           etcd:
             ssl:
               enabled: true
@@ -400,6 +405,7 @@
       pool:
         network:
           engine: calico
+          mtu: 1500
           addons:
             calico_policy:
               enabled: true
@@ -407,6 +413,7 @@
       master:
         network:
           engine: calico
+          mtu: 1500
           addons:
             calico_policy:
               enabled: true
diff --git a/kubernetes/files/calico/calico.conf b/kubernetes/files/calico/calico.conf
index 0401f37..2baa801 100644
--- a/kubernetes/files/calico/calico.conf
+++ b/kubernetes/files/calico/calico.conf
@@ -14,6 +14,9 @@
       "type": "k8s"
     },
 {%- endif %}
+{%- if  pool.network.mtu %}
+    "mtu": {{ pool.network.mtu }},
+{%- endif %}
     "log_level": "info",
     "ipam": {
         "type": "calico-ipam"
diff --git a/metadata/service/common.yml b/metadata/service/common.yml
index 7cb5766..5e72de2 100644
--- a/metadata/service/common.yml
+++ b/metadata/service/common.yml
@@ -6,3 +6,4 @@
     common:
       network:
         engine: none
+        mtu: 1500