DLPX-91082 build VM panics in zap_create_leaf() (#480)

PR URL: https://www.github.com/delphix/delphix-platform/pull/480

Author: Prakash Surya

files/common/lib/modprobe.d/10-zfs.conf

@@ -131,3 +131,9 @@ options zfs zvol_open_timeout_ms=60000
 # and restart the agent if the connection is hung.
 #
 options zfs zfs_deadman_synctime_ms=60000
+
+#
+# We're seeing a panic on the build server with this new feature
+# enabled, thus we disable it here until we can get that fixed.
+#
+options zfs zap_shrink_enabled=0