Revert wrongly reverted commit.

Revert "(Test speed becomes network dependant rather than storage evaluated). Thus use initial default for now."

This reverts commit 703c4c7a.

scalability_test/cluster_configuration_template.json

+{
+    "bt5": "erp5_full_text_myisam_catalog erp5_configurator_standard erp5_wendelin_configurator erp5_scalability_test erp5_wendelin_scalability_test",
+    "frontend-url": "http://git.erp5.org/gitweb/slapos.git/blob_plain/HEAD:/software/apache-frontend/software.cfg",
+    "sla-dict": {
+                "computer_guid={{comp[0]}}": ["zope-activities", "zope-user"]
+    },
+    "mariadb": {
+            "max-connection-count": 1000
+    },
+    "zope-partition-dict": {
+            "activities": {
+                "family": "activities",
+                "instance-count": {{count}},
+                "thread-amount": 2,
+                "timerserver-interval": 1,
+                "port-base": 2300
+            },
+            "user": {
+                "family": "user",
+                "instance-count": {{count}},
+                "thread-amount": 2,
+                "timerserver-interval": 1,
+                "port-base": 2200
+            }
+    }
+}
\ No newline at end of file