11838 secflag tests are racy

*** 11,20 ****
--- 11,21 ----
  # http://www.illumos.org/license/CDDL.
  #
  
  #
  # Copyright 2015, Richard Lowe.
+ # Copyright 2019 Joyent, Inc.
  #
  
  mkdir /tmp/secflags-test.$$
  cd /tmp/secflags-test.$$
  
*** 28,37 ****
--- 29,41 ----
      rm -fr /tmp/secflags-test.$$
  }
  
  trap cleanup EXIT
  
+ # We need to wait for sleep to get exec()ed
+ sleep 1
+ 
  ## gcore-produced core
  gcore $pid >/dev/null
  
  cat > gcore-expected.$$ <<EOF
      namesz: 0x5