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/cinder_plugins/XenAPINFS b/lib/cinder_plugins/XenAPINFS
index fa10715..f730695 100644
--- a/lib/cinder_plugins/XenAPINFS
+++ b/lib/cinder_plugins/XenAPINFS
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # lib/cinder_plugins/XenAPINFS
 # Configure the XenAPINFS driver
 
diff --git a/lib/cinder_plugins/glusterfs b/lib/cinder_plugins/glusterfs
index b4196e4..35ceb27 100644
--- a/lib/cinder_plugins/glusterfs
+++ b/lib/cinder_plugins/glusterfs
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # lib/cinder_plugins/glusterfs
 # Configure the glusterfs driver
 
diff --git a/lib/cinder_plugins/nfs b/lib/cinder_plugins/nfs
index 5f4cc53..83b3993 100644
--- a/lib/cinder_plugins/nfs
+++ b/lib/cinder_plugins/nfs
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # lib/cinder_plugins/nfs
 # Configure the nfs driver
 
diff --git a/lib/cinder_plugins/sheepdog b/lib/cinder_plugins/sheepdog
index 30c60c6..ca343f7 100644
--- a/lib/cinder_plugins/sheepdog
+++ b/lib/cinder_plugins/sheepdog
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # lib/cinder_plugins/sheepdog
 # Configure the sheepdog driver
 
diff --git a/lib/cinder_plugins/vsphere b/lib/cinder_plugins/vsphere
index 436b060..f14ddf0 100644
--- a/lib/cinder_plugins/vsphere
+++ b/lib/cinder_plugins/vsphere
@@ -1,3 +1,5 @@
+#!/bin/bash
+#
 # lib/cinder_plugins/vsphere
 # Configure the vsphere driver