Enable --log-level=info for docker daemons for jenkins jobs and e2e tests except soak-continuous.

cluster/saltbase/salt/docker/docker-defaults

@@ -7,5 +7,9 @@
 {% if pillar.get('network_provider', '').lower() == 'kubenet' %}
   {% set bridge_opts = "" %}
 {% endif -%}
-DOCKER_OPTS="{{grains_opts}} {{e2e_opts}} {{bridge_opts}} --iptables=false --ip-masq=false --log-level=warn"
+{% set log_level = "--log-level=warn" -%}
+{% if pillar['docker_test_log_level'] is defined -%}
+  {% set log_level = pillar['docker_test_log_level'] -%}
+{% endif -%}
+DOCKER_OPTS="{{grains_opts}} {{e2e_opts}} {{bridge_opts}} --iptables=false --ip-masq=false {{log_level}}"
 DOCKER_NOFILE=1000000