Unset CDPATH in build script to fix path generation

In https://github.com/kubernetes/kubernetes/issues/52255, it was determined that if the user has a CDPATH, running `make` will fail. This is because using the KUBE_ROOT variable results in invalid paths when the CDPATH environment variable is set.

Unset CDPATH in build script to fix path generation
c5031faf · Mike Arpaia · 7d64d301 · c5031faf
Unverified Commit c5031faf authored Feb 22, 2018 by Mike Arpaia
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init.sh hack/lib/init.sh +4 -0

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--- a/hack/lib/init.sh
+++ b/hack/lib/init.sh
@@ -18,6 +18,10 @@ set -o errexit
 set -o nounset
 set -o pipefail

+# Unset CDPATH so that path interpolation can work correctly
+# https://github.com/kubernetes/kubernetes/issues/52255
+unset CDPATH
+
 # The root of the build/dist directory
 KUBE_ROOT="$(cd "$(dirname "${BASH_SOURCE}")/../.." && pwd -P)"