Add gather-timestamps job

This job gathers the timestamps produced by the pr and nightly jobs each
day, and bundles them up into json and csv files for easy parsing.

It collects the timestamps of all jobs that have finished in the past 24
hours at 8 AM UTC.

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
Change-Id: I4c4c52dd4969d7189d48625f60bb2eb05fc23e84
diff --git a/mbedtls-gather-timestamps.yaml b/mbedtls-gather-timestamps.yaml
new file mode 100644
index 0000000..6b74a16
--- /dev/null
+++ b/mbedtls-gather-timestamps.yaml
@@ -0,0 +1,23 @@
+- job:
+    concurrent: true
+    description: Mbed TLS job to gather timestamps from various jobs' runs
+    name: mbedtls-gather-timestamps
+    pipeline-scm:
+      lightweight-checkout: true
+      scm:
+      - git:
+          branches:
+          - 'master'
+          url: https://github.com/Mbed-TLS/mbedtls-test.git
+      script-path: vars/mbedtls-gather-timestamps-Jenkinsfile
+    project-type: pipeline
+    properties:
+    - speed-durability:
+        hint: performance-optimized
+    - build-discarder:
+        artifact-days-to-keep: -1
+        artifact-num-to-keep: -1
+        days-to-keep: 60
+        num-to-keep: 100
+    triggers:
+    - timed: 0 8 * * *