Enforce function declaration format in bash8
Check that function calls look like ^function foo {$ in bash8, and fix
all existing failures of that check. Add a note to HACKING.rst
Change-Id: Ic19eecb39e0b20273d1bcd551a42fe400d54e938
diff --git a/tools/xen/prepare_guest.sh b/tools/xen/prepare_guest.sh
index 0946126..440774e 100755
--- a/tools/xen/prepare_guest.sh
+++ b/tools/xen/prepare_guest.sh
@@ -21,7 +21,7 @@
DOMZERO_USER="$4"
-function setup_domzero_user() {
+function setup_domzero_user {
local username
username="$1"