Show k8s labels and container env vars in the details panel.

[tomwilkie]

Make the whole docker labels logic generic & template based, allowing the probe to create arbitrary tables in the details panel based on the key prefixes.

Fixes #1207, Fixes #528

[tomwilkie]

@davkal would you mind taking a look at the UI? It doesn't seem to truncate these tables and show and +14 type expander:

[paulbellamy]

LGTM but I'd imagine @davkal will want to refactor the js into a Table component, inherited by NodeDetails/etc...

[tomwilkie]

Lets wait for an LGTM from @davkal

[tomwilkie]

Report for testing:
report.json.zip

[davkal]

• truncation worked
• react key was in the wrong place
• empty tables render section labels

Last two items are solved by

diff --git a/client/app/scripts/components/node-details.js b/client/app/scripts/components/node-details.js
index b7c2ced..bf8cd15 100644
--- a/client/app/scripts/components/node-details.js
+++ b/client/app/scripts/components/node-details.js
@@ -191,11 +191,17 @@ export default class NodeDetails extends React.Component {
             </div>
           )}

-          {details.tables && details.tables.length > 0
-            && details.tables.map(table => (<div className="node-details-content-section">
-            <div className="node-details-content-section-header">{table.label}</div>
-            <NodeDetailsLabels rows={table.rows} key={table.id} />
-          </div>))}
+          {details.tables && details.tables.length > 0 && details.tables.map(table => {
+            if (table.rows.length > 0) {
+              return (
+                <div className="node-details-content-section" key={table.id}>
+                  <div className="node-details-content-section-header">{table.label}</div>
+                  <NodeDetailsLabels rows={table.rows} />
+                </div>
+              );
+            }
+            return null;
+          })}
         </div>
       </div>
     );