add support for proxy in docker

Change-Id: I7eb51623d47f086494d8e3c2b98cd1a08f59ff1c
diff --git a/tests/pillar/host_single_proxy.sls b/tests/pillar/host_single_proxy.sls
new file mode 100644
index 0000000..516e970
--- /dev/null
+++ b/tests/pillar/host_single_proxy.sls
@@ -0,0 +1,18 @@
+docker:
+  host:
+    enabled: true
+    options:
+      bip: 192.168.0.1/24
+      log-driver: json-file
+      log-opts:
+        size: 50m
+      insecure-registry:
+      - srv01
+      - srv02
+      - srv03
+    proxy:
+      http: http://proxy:3128
+      https: http://[::1]:3128
+      no_proxy:
+        - local1
+        - local2