Issue #5 - Adjust shebang to use python2

Wrong shebang under (at least) D11

% git-bz bash: /usr/bin/git-bz: /usr/bin/python: bad interpreter: No such file or directory

% ls /usr/bin/python* /usr/bin/python2 /usr/bin/python2.7 /usr/bin/python3 /usr/bin/python3.8

git-bz is using /usr/bin/python

We must specify /usr/bin/python2

1 files changed, 1 insertions, 1 deletions

diff --git a/git-bz b/git-bz
index 0fa07f9..4e833d2 100755
--- a/git-bz
+++ b/git-bz
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python2
 # -*- coding: utf_8 -*-
 #
 # git-bz - git subcommand to integrate with bugzilla