[3/6] kudu git commit: Add 'flex' to preflight.py script

[da...@apache.org]

Add 'flex' to preflight.py script

flex is required to build thrift, so it's worth checking it in
"preflight" rather than hitting the point where the build fails.

Change-Id: Idef5e6a89956a7a94074a3c7afe939c2c4fc8966
Reviewed-on: http://gerrit.cloudera.org:8080/8483
Reviewed-by: Dan Burkert <da...@apache.org>
Tested-by: Todd Lipcon <to...@apache.org>


Project: http://git-wip-us.apache.org/repos/asf/kudu/repo
Commit: http://git-wip-us.apache.org/repos/asf/kudu/commit/c326afae
Tree: http://git-wip-us.apache.org/repos/asf/kudu/tree/c326afae
Diff: http://git-wip-us.apache.org/repos/asf/kudu/diff/c326afae

Branch: refs/heads/master
Commit: c326afaee4d20f902db18e36897869bc47863428
Parents: 47b81c4
Author: Todd Lipcon <to...@apache.org>
Authored: Mon Nov 6 14:21:04 2017 -0800
Committer: Todd Lipcon <to...@apache.org>
Committed: Tue Nov 7 00:09:25 2017 +0000

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 thirdparty/preflight.py | 1 +
 1 file changed, 1 insertion(+)
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http://git-wip-us.apache.org/repos/asf/kudu/blob/c326afae/thirdparty/preflight.py
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diff --git a/thirdparty/preflight.py b/thirdparty/preflight.py
index 4e071f3..80992a4 100755
--- a/thirdparty/preflight.py
+++ b/thirdparty/preflight.py
@@ -40,6 +40,7 @@ REQUIRED_TOOLS = [
   "autoconf",
   "automake",
   "curl",
+  "flex",
   "git",
   "make",
   "patch",