Ceph report fixes and Ceph bench beta 0.1

- Ceph stats collection
- Updated Ceph results averages calculations

Fixes:
- Fixed huge PG dump copying >30MB jsons
- Fixes for the fio-runner constants

 Related-PROD: PROD-36669

Change-Id: Id8e250f626dfdaecc12ad005b61d03a21c9e6c4e
diff --git a/templates/ceph_bench_html.j2 b/templates/ceph_bench_html.j2
index e847cb4..c05a412 100644
--- a/templates/ceph_bench_html.j2
+++ b/templates/ceph_bench_html.j2
@@ -444,7 +444,7 @@
             </div>
             <table style="table-layout: auto;"><tbody>
                 {% for agent,ag_result in dt["agents"].items() %}
-                {% set j = ag_result[time]["jobs"][0] %}
+                {% set j = ag_result["jobs"][0] %}
                 <tr>
                     <td class="status">{{ time }}</td>
                     <td class="status">{{ agent }}</td>