[ovs-dev] [PATCH ovn] travis: Fix CI failure for osx builds

[numans at ovn.org]

From: Numan Siddique <numans at ovn.org>

The below failure is seen

****
checking for Python 3 (version 3.4 or later)... /usr/local/bin/python3
checking where Python six library is available... configure: error: Missing Python six library.
The command "./.travis/${TRAVIS_OS_NAME}-build.sh $OPTS" exited with 1.
****

This patch fixes it.

Signed-off-by: Numan Siddique <numans at ovn.org>
---
 .travis/osx-prepare.sh | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/.travis/osx-prepare.sh b/.travis/osx-prepare.sh
index 4725fd829..7f639a62e 100755
--- a/.travis/osx-prepare.sh
+++ b/.travis/osx-prepare.sh
@@ -1,7 +1,5 @@
 #!/bin/bash
 set -ev
-pip2 install --user six
-pip2 install --user --upgrade docutils
+pip3 install --user six
+pip3 install --user --upgrade docutils
 
-brew update || true
-brew uninstall libtool && brew install libtool || true
-- 
2.23.0