mesos git commit: Revert "Replaced the `Os.Which` test to use `cat` rather than `ping`."

[mp...@apache.org]

Repository: mesos
Updated Branches:
  refs/heads/master f0735edd2 -> 81349a123


Revert "Replaced the `Os.Which` test to use `cat` rather than `ping`."

Turns out Windows does not have `cat` installed by default.
Considering we alraedy shell out to the `ping` command in
`src/tests/containerizer/capabilities_test_helper.cpp`,
we'll just pick up `ping` as a dependency for now.

This reverts commit 981767895f1770701efeca3b8efd5c66cd34d8fc.


Project: http://git-wip-us.apache.org/repos/asf/mesos/repo
Commit: http://git-wip-us.apache.org/repos/asf/mesos/commit/81349a12
Tree: http://git-wip-us.apache.org/repos/asf/mesos/tree/81349a12
Diff: http://git-wip-us.apache.org/repos/asf/mesos/diff/81349a12

Branch: refs/heads/master
Commit: 81349a12381cdcd6ba94d1531ff0da263b1c2d1c
Parents: f0735ed
Author: Michael Park <mp...@apache.org>
Authored: Mon Jan 29 11:44:33 2018 -0800
Committer: Michael Park <mp...@apache.org>
Committed: Mon Jan 29 11:44:33 2018 -0800

----------------------------------------------------------------------
 3rdparty/stout/tests/os_tests.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/mesos/blob/81349a12/3rdparty/stout/tests/os_tests.cpp
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diff --git a/3rdparty/stout/tests/os_tests.cpp b/3rdparty/stout/tests/os_tests.cpp
index d92c8c3..11f1720 100644
--- a/3rdparty/stout/tests/os_tests.cpp
+++ b/3rdparty/stout/tests/os_tests.cpp
@@ -1039,7 +1039,7 @@ TEST_F(OsTest, SYMLINK_Realpath)
 TEST_F(OsTest, Which)
 {
   // TODO(jieyu): Test PATH search ordering and file execution bit.
-  Option<string> which = os::which("cat");
+  Option<string> which = os::which("ping");
   ASSERT_SOME(which);
 
   which = os::which("bar");