Merge branch '385-libpmodules-ignore-new-keys-in-overlay-config-file-2' into '1.1.22'

Resolve "libpmodules: ignore new keys in overlay config file"

See merge request Pmodules/src!411

Pmodules/libpmodules.bash.in

@@ -262,9 +262,10 @@ pm::read_config(){
 					OverlayInfo[${ol_name}:modulepath]=$(${envsubst} <<< "${modulepath%:}")
 					;;
 				* )
-					std::die 3 "%s -- %s\n%s" \
-						 "Invalid key in configuration" \
-						 "${key}" "${yaml_input}"
+					[[ -v OverlayConfigKeys[${key}] ]] || \
+						std::die 3 "%s -- %s\n%s" \
+							 "Invalid key in configuration" \
+							 "${key}" "${yaml_input}"
 					;;
 
 			esac