Allow disabling of debug logging

I find that enabling the debug log level often causes me to miss
important error messages due to the sheer volume of information
logged.  This change allows configuration of the debug option
in a number of the projects so it can be disabled globally
without having to make one-off changes after each re-stack.

Note that this does not apply to Keystone or Swift right now.
They use a different method to configure their logging level and
I'm not as familiar with them so I didn't want to mess with their
settings.

Change-Id: I185d496543d245a644854c8a37f3359377cb978c
diff --git a/lib/neutron b/lib/neutron
index 306140a..564315b 100644
--- a/lib/neutron
+++ b/lib/neutron
@@ -537,7 +537,7 @@
     cp $NEUTRON_DIR/etc/dhcp_agent.ini $Q_DHCP_CONF_FILE
 
     iniset $Q_DHCP_CONF_FILE DEFAULT verbose True
-    iniset $Q_DHCP_CONF_FILE DEFAULT debug True
+    iniset $Q_DHCP_CONF_FILE DEFAULT debug $ENABLE_DEBUG_LOG_LEVEL
     iniset $Q_DHCP_CONF_FILE DEFAULT use_namespaces $Q_USE_NAMESPACE
     iniset $Q_DHCP_CONF_FILE DEFAULT root_helper "$Q_RR_COMMAND"
 
@@ -557,7 +557,7 @@
     cp $NEUTRON_DIR/etc/l3_agent.ini $Q_L3_CONF_FILE
 
     iniset $Q_L3_CONF_FILE DEFAULT verbose True
-    iniset $Q_L3_CONF_FILE DEFAULT debug True
+    iniset $Q_L3_CONF_FILE DEFAULT debug $ENABLE_DEBUG_LOG_LEVEL
     iniset $Q_L3_CONF_FILE DEFAULT use_namespaces $Q_USE_NAMESPACE
     iniset $Q_L3_CONF_FILE DEFAULT root_helper "$Q_RR_COMMAND"
 
@@ -573,7 +573,7 @@
     cp $NEUTRON_DIR/etc/metadata_agent.ini $Q_META_CONF_FILE
 
     iniset $Q_META_CONF_FILE DEFAULT verbose True
-    iniset $Q_META_CONF_FILE DEFAULT debug True
+    iniset $Q_META_CONF_FILE DEFAULT debug $ENABLE_DEBUG_LOG_LEVEL
     iniset $Q_META_CONF_FILE DEFAULT nova_metadata_ip $Q_META_DATA_IP
     iniset $Q_META_CONF_FILE DEFAULT root_helper "$Q_RR_COMMAND"
 
@@ -597,7 +597,7 @@
     # ensure that an agent's configuration can override the default
     iniset /$Q_PLUGIN_CONF_FILE agent root_helper "$Q_RR_COMMAND"
     iniset $NEUTRON_CONF DEFAULT verbose True
-    iniset $NEUTRON_CONF DEFAULT debug True
+    iniset $NEUTRON_CONF DEFAULT debug $ENABLE_DEBUG_LOG_LEVEL
 
     # Configure agent for plugin
     neutron_plugin_configure_plugin_agent
@@ -620,7 +620,7 @@
     fi
 
     iniset $NEUTRON_CONF DEFAULT verbose True
-    iniset $NEUTRON_CONF DEFAULT debug True
+    iniset $NEUTRON_CONF DEFAULT debug $ENABLE_DEBUG_LOG_LEVEL
     iniset $NEUTRON_CONF DEFAULT policy_file $Q_POLICY_FILE
     iniset $NEUTRON_CONF DEFAULT allow_overlapping_ips $Q_ALLOW_OVERLAPPING_IP