archives: add 'pass' param validation check

if this had already been in place then it would have caught
bug #952837.

Gbp-Dch: Short
Closes: #952841

scripts/build/bootstrap_archives

@@ -24,6 +24,10 @@ then
 	shift
 fi
 
+if [ "${_PASS}" != "binary" ] && [ "${_PASS}" != "source" ]; then
+	Usage
+fi
+
 Arguments "${@}"
 
 # Reading configuration files

scripts/build/chroot_archives

@@ -21,6 +21,10 @@ USAGE="${PROGRAM} {source|binary} {install|remove} [--force]"
 _PASS="${1}"
 shift
 
+if [ "${_PASS}" != "binary" ] && [ "${_PASS}" != "source" ]; then
+	Usage
+fi
+
 Arguments "${@}"
 
 # Reading configuration files