Add Machine Provider ui parts

appengine/swarming/elements/res/imp/botpage/bot-page.html

Index: appengine/swarming/elements/res/imp/botpage/bot-page.html
diff --git a/appengine/swarming/elements/res/imp/botpage/bot-page.html b/appengine/swarming/elements/res/imp/botpage/bot-page.html
index 4e0ec31e8f05e09366f258a045a853a8ab79082a..5b13c6226ea0709842f15724c8fce75c1eb4453b 100644
--- a/appengine/swarming/elements/res/imp/botpage/bot-page.html
+++ b/appengine/swarming/elements/res/imp/botpage/bot-page.html
@@ -231,6 +231,16 @@
                 <td>Authenticated as</td>
                 <td colspan=2>[[_bot.authenticated_as]]</td>
               </tr>
+              <template is="dom-if" if="[[_bot.lease_id]]">
+                <tr>
+                  <td>Machine Provider Lease ID</td>
+                  <td colspan=2>[[_bot.lease_id]]</td>

[smut, 2016/10/07 21:43:08]

Can you linkify this or do I need to include that info in the proto?

Basically the MP URL base needs to be extracted from luci-config (we already do
that and store it in the datastore) and joined with this lease_id to make a URL
to anchor here.

+                </tr>
+                <tr>
+                  <td>Machine Provider Lease Expires</td>
+                  <td colspan=2>[[_bot.human_lease_expiration_ts]]</td>
+                </tr>
+              </template>
             </table>
 
             <span class="title">State</span>