respect the virtualenv by using /usr/bin/env

Signed-off-by: S.Çağlar Onur <caglar@10ur.org>
diff --git a/planetstack/tools/copy-opencloud.py b/planetstack/tools/copy-opencloud.py
index 205ea2d..d71ebad 100644
--- a/planetstack/tools/copy-opencloud.py
+++ b/planetstack/tools/copy-opencloud.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python
+#! /usr/bin/env python
 
 import base64
 import os
diff --git a/planetstack/tools/diff-opencloud.py b/planetstack/tools/diff-opencloud.py
index 819fa45..4b6511c 100644
--- a/planetstack/tools/diff-opencloud.py
+++ b/planetstack/tools/diff-opencloud.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python
+#! /usr/bin/env python
 
 import base64
 import os
diff --git a/planetstack/tools/get_instance_ip.py b/planetstack/tools/get_instance_ip.py
index 0d26126..79b6dd6 100644
--- a/planetstack/tools/get_instance_ip.py
+++ b/planetstack/tools/get_instance_ip.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python
+#! /usr/bin/env python
 
 import json
 import os
diff --git a/planetstack/tools/get_instance_name.py b/planetstack/tools/get_instance_name.py
index 5dc5ca3..3450df5 100644
--- a/planetstack/tools/get_instance_name.py
+++ b/planetstack/tools/get_instance_name.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python
+#! /usr/bin/env python
 
 import json
 import os
diff --git a/planetstack/tools/openstack-healthcheck.py b/planetstack/tools/openstack-healthcheck.py
index 63534c8..4b8a3f1 100644
--- a/planetstack/tools/openstack-healthcheck.py
+++ b/planetstack/tools/openstack-healthcheck.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python
+#! /usr/bin/env python
 
 """
     Check the status of libvirt, openstack-nova-compute, and