source-script: Install missing packages

Signed-off-by: Stephen Gallagher <sgallagh@redhat.com>

nodejs-sources.sh

@@ -100,6 +100,12 @@ assign_positional_args 1 "${_positionals[@]}"
 ### END OF CODE GENERATED BY Argbash (sortof) ### ])
 # [ <-- needed because of Argbash
 
+packages=("jq" "wget" "tar" "fedpkg" "grep" "sed")
+
+rpm -q ${packages[@]} >/dev/null
+if [ $? -ne 0 ]; then
+  sudo dnf -y install ${packages[@]}
+fi
 
 set -e