11838 secflag tests are racy

@@ -11,10 +11,11 @@
 # http://www.illumos.org/license/CDDL.
 #
 
 #
 # Copyright 2015, Richard Lowe.
+# Copyright 2019 Joyent, Inc.
 #
 
 mkdir /tmp/secflags-test.$$
 cd /tmp/secflags-test.$$
 

@@ -28,10 +29,13 @@
     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