Add Alibaba Cloud ECI Documents

Alibaba Cloud ECI(Elastic Container Instance) is a service that allow you
run containers without having to manage servers or clusters.

This commit add ECI documents for virtual kubelet.

Signed-off-by: xianwei.zw <xianwei.zw@alibaba-inc.com>
Signed-off-by: shidao.ytt <shidao.ytt@alibaba-inc.com>

providers/alicloud/eci.svg

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 21.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.0" id="layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#00C1DE;}
+</style>
+<g>
+	<polygon class="st0" points="41.4,22.7 41.4,25 43.7,25.6 43.7,31.8 24,36.3 4.3,31.8 4.3,25.6 6.5,25 6.5,22.7 2,23.7 2,33.7
+		24,38.7 46,33.7 46,23.7 	"/>
+	<polygon class="st0" points="38.1,10.6 24,8 9.9,10.6 24,12.9 	"/>
+	<polygon class="st0" points="22.8,15.1 8.8,12.6 8.8,30.2 22.8,33.4 	"/>
+	<path class="st0" d="M25.2,33.4l14-3.2V12.6l-14,2.5V33.4z M35.2,15.3l2-0.4v13.7l-2,0.5V15.3z M31.3,15.9l2-0.4v13.9l-2,0.5V15.9z
+		 M27.5,16.6l2-0.4v14l-2,0.5V16.6z"/>
+</g>
+</svg>