Revert "Using new VOLTHA-ONOS image in scale test"

This reverts commit e8ae688e00aeb51cffe83c886934593442c8c366.

Reason for revert: reusing my image due to karaf 4.2.9 in Matteo's

Change-Id: I2c87160204bf537997942e7a1cc14c047d6bca68
diff --git a/jjb/voltha-scale.yaml b/jjb/voltha-scale.yaml
index e9c9366..6ee6590 100644
--- a/jjb/voltha-scale.yaml
+++ b/jjb/voltha-scale.yaml
@@ -248,7 +248,7 @@
           ofAgentImg: ''
           openoltAdapterImg: matteoscandolo/voltha-openolt-adapter:per-gem-lock
           openonuAdapterImg: ''
-          onosImg: matteoscandolo/voltha-onos:retry
+          onosImg: andreacampanella/voltha-onos:eapol-retry
 
       - 'voltha-scale-measurements':
           name: 'voltha-scale-measurements-voltha-2.4-2-16-32-dt-subscribers'
@@ -275,7 +275,7 @@
           ofAgentImg: ''
           openoltAdapterImg: matteoscandolo/voltha-openolt-adapter:per-gem-lock
           openonuAdapterImg: ''
-          onosImg: matteoscandolo/voltha-onos:retry
+          onosImg: andreacampanella/voltha-onos:eapol-retry
 
       # development pipeline
       - 'voltha-scale-measurements-dev':