core/build/various: python3 compat, prepare for python2 -> python3

Note 1) we're not supposed to be using #!/usr/bin/env python, see
https://fedoraproject.org/wiki/Packaging:Guidelines?rd=Packaging/Guidelines#Shebang_lines

Note 2) we're also not supposed to be using "!/usr/bin/python,
see https://fedoraproject.org/wiki/Changes/Avoid_usr_bin_python_in_RPM_Build#Quick_Opt-Out

The previous patch (https://review.gluster.org/19767) tried to do too
much in one patch, so it was abandoned.

This patch does two things:
1) minor cleanup of configure(.ac) to explicitly use python2
2) change all the shebang lines to #!/usr/bin/python2 and add them
where they were missing based on warnings emitted during rpmbuild.

In a follow-up patch python2 will eventually be changed to python3.

Before that python2-isms (e.g. print, string.join(), etc.) need to be
converted to python3. Some of those can be rewritten in version agnostic
python. E.g. print statements become print() with "from __future_ import
print_function". The python 2to3 utility will be used for some of those.
Also Aravinda has given guidance in the comments to the first patch for
changes.

updates: #411
Change-Id: I471730962b2526022115a1fc33629fb078b74338
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>

8 files changed, 8 insertions, 8 deletions

diff --git a/tests/bugs/distribute/overlap.py b/tests/bugs/distribute/overlap.py
index 15f2da473f1..253bb4052ec 100755
--- a/tests/bugs/distribute/overlap.py
+++ b/tests/bugs/distribute/overlap.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python2
 
 import sys
 
diff --git a/tests/bugs/nfs/socket-as-fifo.py b/tests/bugs/nfs/socket-as-fifo.py
index 1fce5b96896..da9886ea364 100755
--- a/tests/bugs/nfs/socket-as-fifo.py
+++ b/tests/bugs/nfs/socket-as-fifo.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python2
 #
 # Create a unix domain socket and test if it is a socket (and not a fifo/pipe).
 #
diff --git a/tests/features/ipctest.py b/tests/features/ipctest.py
index 93392486140..e89642f589b 100755
--- a/tests/features/ipctest.py
+++ b/tests/features/ipctest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python2
 
 import ctypes
 
diff --git a/tests/utils/create-files.py b/tests/utils/create-files.py
index bef4201bf1f..71f967f4fdb 100755
--- a/tests/utils/create-files.py
+++ b/tests/utils/create-files.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/python2
 
 # This script was developed by Vijaykumar Koppad (vkoppad@redhat.com)
 # The latest version of this script can found at
diff --git a/tests/utils/getfattr.py b/tests/utils/getfattr.py
index 1a8369af7c4..6636644f67c 100755
--- a/tests/utils/getfattr.py
+++ b/tests/utils/getfattr.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/python2
 
 import os
 import sys
diff --git a/tests/utils/gfid-access.py b/tests/utils/gfid-access.py
index 81258073da1..4ca1665fec4 100755
--- a/tests/utils/gfid-access.py
+++ b/tests/utils/gfid-access.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/python2
 #
 # Copyright (c) 2011-2014 Red Hat, Inc. <http://www.redhat.com>
 # This file is part of GlusterFS.
diff --git a/tests/utils/pidof.py b/tests/utils/pidof.py
index 575b899b6cc..01f2f0ad5bd 100755
--- a/tests/utils/pidof.py
+++ b/tests/utils/pidof.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python2
 
 import sys
 
diff --git a/tests/utils/setfattr.py b/tests/utils/setfattr.py
index d714d05edf3..159218d8bef 100755
--- a/tests/utils/setfattr.py
+++ b/tests/utils/setfattr.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/python2
 
 import os
 import sys