add shebang lines to all lib files

With gerrit 2.8, and the new change screen, this will trigger syntax
highlighting in gerrit. Thus making reviewing code a lot nicer.

Change-Id: Id238748417ffab53e02d59413dba66f61e724383
diff --git a/lib/neutron_thirdparty/bigswitch_floodlight b/lib/neutron_thirdparty/bigswitch_floodlight
index 033731e..e3f4689 100644
--- a/lib/neutron_thirdparty/bigswitch_floodlight
+++ b/lib/neutron_thirdparty/bigswitch_floodlight
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # Big Switch/FloodLight  OpenFlow Controller
 # ------------------------------------------
 
diff --git a/lib/neutron_thirdparty/midonet b/lib/neutron_thirdparty/midonet
index 099a66e..2c82d48 100644
--- a/lib/neutron_thirdparty/midonet
+++ b/lib/neutron_thirdparty/midonet
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # MidoNet
 # -------
 
diff --git a/lib/neutron_thirdparty/ryu b/lib/neutron_thirdparty/ryu
index eaf088b..1f78a21 100644
--- a/lib/neutron_thirdparty/ryu
+++ b/lib/neutron_thirdparty/ryu
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # Ryu SDN Framework
 # -----------------
 
diff --git a/lib/neutron_thirdparty/trema b/lib/neutron_thirdparty/trema
index 3e59ef2..075f013 100644
--- a/lib/neutron_thirdparty/trema
+++ b/lib/neutron_thirdparty/trema
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # Trema Sliceable Switch
 # ----------------------
 
diff --git a/lib/neutron_thirdparty/vmware_nsx b/lib/neutron_thirdparty/vmware_nsx
index 7a20c64..7027a29 100644
--- a/lib/neutron_thirdparty/vmware_nsx
+++ b/lib/neutron_thirdparty/vmware_nsx
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # VMware NSX
 # ----------