tf-m-eclair-daily: Enable timed trigger

For now, build twice a week.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I009c7326ac659df0ce9c1a2ba4e6d316fb69b946
diff --git a/tf-m-eclair-daily.yaml b/tf-m-eclair-daily.yaml
index 0437b65..0cbec5b 100644
--- a/tf-m-eclair-daily.yaml
+++ b/tf-m-eclair-daily.yaml
@@ -11,6 +11,8 @@
         - build-discarder:
             days-to-keep: 60
             artifact-num-to-keep: 40
+    triggers:
+        - timed: 'H H(20-23) * * 3,7'
     parameters:
       - string:
           name: 'FILTER_GROUP'