Display correct Power Consumption & Cap values

Current values are hard coded to '000 W'.
This fix is to do REST calls and display the correct values.

Resolves openbmc/openbmc#2735

Change-Id: I2f6766f1685a2bd52da62cda19998794f80270ec
Signed-off-by: CamVan Nguyen <ctnguyen@us.ibm.com>
diff --git a/app/overview/controllers/system-overview-controller.html b/app/overview/controllers/system-overview-controller.html
index 094fac0..346e6e1 100644
--- a/app/overview/controllers/system-overview-controller.html
+++ b/app/overview/controllers/system-overview-controller.html
@@ -67,11 +67,11 @@
 					<ul class="overview__metadata-wrapper">
 						<li class="overview__metadata-block">
 							<p class="content-label">Power Consumption</p>
-							<p class="courier-bold">000 W</p>
+							<p class="courier-bold">{{power_consumption}}</p>
 						</li>
 						<li class="overview__metadata-block">
 							<p class="content-label">Power Cap</p>
-							<p class="courier-bold">000 W</p>
+							<p class="courier-bold">{{power_cap}}</p>
 						</li>
 					</ul>
 				</div>