Add fullstack resources for linuxbridge agent

This patch adds resources, fixtures and base test_connectivity tests
for host with linuxbridge agent.

Model of host with linuxbridge agent is made in separate namespace
named "host-XXX". It has got connectivity with rabbit via ovs port.
Same port is used also to provide connectivity with different "hosts"

Co-Authored-By: Mathieu Rohon <mathieu.rohon@gmail.com>

Change-Id: I6230d8d09f77bd20674bf6c3be69fbc1627d66f8
Closes-bug: #1518675

tools/configure_for_func_testing.sh

@@ -245,6 +245,15 @@ function _install_post_devstack {
 }
 
 
+function _configure_iptables_rules {
+    # For linuxbridge agent fullstack tests we need to add special rules to
+    # iptables for connection of agents to rabbitmq:
+    CHAIN_NAME="openstack-INPUT"
+    sudo iptables -n --list $CHAIN_NAME 1> /dev/null 2>&1 || CHAIN_NAME="INPUT"
+    sudo iptables -I $CHAIN_NAME -s 240.0.0.0/8 -p tcp -m tcp -d 240.0.0.0/8 --dport 5672 -j ACCEPT
+}
+
+
 function configure_host_for_func_testing {
     echo_summary "Configuring host for functional testing"
 
@@ -270,3 +279,7 @@ if [[ "$IS_GATE" != "True" ]]; then
         configure_host_for_func_testing
     fi
 fi
+
+if [[ "$VENV" =~ "dsvm-fullstack" ]]; then
+    _configure_iptables_rules
+fi