Following up on r1455881, make sbox_wc_update_depth behave like it is supposed
to and fix the new test.

* subversion/tests/libsvn_wc/op-depth-test.c
  (move_depth_expand): Update caller.

* subversion/tests/libsvn_wc/utils.c
  (sbox_wc_update_depth): Pass the new sticky argument to svn_client_update4()
    instead of always passing true.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1455887 13f79535-47bb-0310-9956-ffa450edef68