Removed neutron_plugin_configure_debug_command functions

Those are not called by devstack anymore. This cleanup also gets rid of
code that attempts to set external_network_bridge to an empty value,
which triggers a deprecation warning for the option since it's going to
be removed in a next Neutron release.

Change-Id: I5adcbab877b4e8742522de81b1a85acfc33160d7
diff --git a/lib/neutron_plugins/README.md b/lib/neutron_plugins/README.md
index f03000e..ed40886 100644
--- a/lib/neutron_plugins/README.md
+++ b/lib/neutron_plugins/README.md
@@ -24,7 +24,6 @@
 * ``neutron_plugin_configure_common`` :
   set plugin-specific variables, ``Q_PLUGIN_CONF_PATH``, ``Q_PLUGIN_CONF_FILENAME``,
   ``Q_PLUGIN_CLASS``
-* ``neutron_plugin_configure_debug_command``
 * ``neutron_plugin_configure_dhcp_agent``
 * ``neutron_plugin_configure_l3_agent``
 * ``neutron_plugin_configure_plugin_agent``
diff --git a/lib/neutron_plugins/bigswitch_floodlight b/lib/neutron_plugins/bigswitch_floodlight
index 586ded7..52c6ad5 100644
--- a/lib/neutron_plugins/bigswitch_floodlight
+++ b/lib/neutron_plugins/bigswitch_floodlight
@@ -26,10 +26,6 @@
     BS_FL_CONTROLLER_TIMEOUT=${BS_FL_CONTROLLER_TIMEOUT:-10}
 }
 
-function neutron_plugin_configure_debug_command {
-    _neutron_ovs_base_configure_debug_command
-}
-
 function neutron_plugin_configure_dhcp_agent {
     :
 }
diff --git a/lib/neutron_plugins/brocade b/lib/neutron_plugins/brocade
index 6ba0a66..1b42e77 100644
--- a/lib/neutron_plugins/brocade
+++ b/lib/neutron_plugins/brocade
@@ -49,10 +49,6 @@
 
 }
 
-function neutron_plugin_configure_debug_command {
-    iniset $NEUTRON_TEST_CONFIG_FILE DEFAULT external_network_bridge
-}
-
 function neutron_plugin_configure_dhcp_agent {
     iniset $Q_DHCP_CONF_FILE DEFAULT dhcp_agent_manager neutron.agent.dhcp_agent.DhcpAgentWithStateReport
 }
diff --git a/lib/neutron_plugins/cisco b/lib/neutron_plugins/cisco
index fc2cb8a..b397169 100644
--- a/lib/neutron_plugins/cisco
+++ b/lib/neutron_plugins/cisco
@@ -45,7 +45,6 @@
 _prefix_function neutron_plugin_create_nova_conf ovs
 _prefix_function neutron_plugin_install_agent_packages ovs
 _prefix_function neutron_plugin_configure_common ovs
-_prefix_function neutron_plugin_configure_debug_command ovs
 _prefix_function neutron_plugin_configure_dhcp_agent ovs
 _prefix_function neutron_plugin_configure_l3_agent ovs
 _prefix_function neutron_plugin_configure_plugin_agent ovs
@@ -83,10 +82,6 @@
     Q_PLUGIN_CLASS="neutron.plugins.cisco.network_plugin.PluginV2"
 }
 
-function neutron_plugin_configure_debug_command {
-    :
-}
-
 function neutron_plugin_configure_dhcp_agent {
     iniset $Q_DHCP_CONF_FILE DEFAULT dhcp_agent_manager neutron.agent.dhcp_agent.DhcpAgentWithStateReport
 }
diff --git a/lib/neutron_plugins/linuxbridge_agent b/lib/neutron_plugins/linuxbridge_agent
index 5885616..f121637 100755
--- a/lib/neutron_plugins/linuxbridge_agent
+++ b/lib/neutron_plugins/linuxbridge_agent
@@ -39,10 +39,6 @@
     install_package bridge-utils
 }
 
-function neutron_plugin_configure_debug_command {
-    iniset $NEUTRON_TEST_CONFIG_FILE DEFAULT external_network_bridge
-}
-
 function neutron_plugin_configure_dhcp_agent {
     local conf_file=$1
     :
diff --git a/lib/neutron_plugins/nuage b/lib/neutron_plugins/nuage
index 61e634e..1c04aaa 100644
--- a/lib/neutron_plugins/nuage
+++ b/lib/neutron_plugins/nuage
@@ -33,10 +33,6 @@
     NUAGE_CNA_DEF_NETPART_NAME=${NUAGE_CNA_DEF_NETPART_NAME:-''}
 }
 
-function neutron_plugin_configure_debug_command {
-    :
-}
-
 function neutron_plugin_configure_dhcp_agent {
     :
 }
diff --git a/lib/neutron_plugins/openvswitch_agent b/lib/neutron_plugins/openvswitch_agent
index 76a1a4f..61305e1 100644
--- a/lib/neutron_plugins/openvswitch_agent
+++ b/lib/neutron_plugins/openvswitch_agent
@@ -23,10 +23,6 @@
     _neutron_ovs_base_install_agent_packages
 }
 
-function neutron_plugin_configure_debug_command {
-    _neutron_ovs_base_configure_debug_command
-}
-
 function neutron_plugin_configure_dhcp_agent {
     local conf_file=$1
     :
diff --git a/lib/neutron_plugins/ovs_base b/lib/neutron_plugins/ovs_base
index 62a4d00..795d2bb 100644
--- a/lib/neutron_plugins/ovs_base
+++ b/lib/neutron_plugins/ovs_base
@@ -77,14 +77,6 @@
     fi
 }
 
-function _neutron_ovs_base_configure_debug_command {
-    if [ "$Q_USE_PROVIDERNET_FOR_PUBLIC" = "True" ]; then
-        iniset $NEUTRON_TEST_CONFIG_FILE DEFAULT external_network_bridge ""
-    else
-        iniset $NEUTRON_TEST_CONFIG_FILE DEFAULT external_network_bridge $PUBLIC_BRIDGE
-    fi
-}
-
 function _neutron_ovs_base_configure_firewall_driver {
     if [[ "$Q_USE_SECGROUP" == "True" ]]; then
         iniset /$Q_PLUGIN_CONF_FILE securitygroup firewall_driver iptables_hybrid