Apply logging prefix on output from DEBUG_MEMORY (#3975)

scripts/start-configuration

@@ -54,8 +54,8 @@ fi
 
 if isTrue "${DEBUG_MEMORY:-false}"; then
   log "Memory usage and availability (in MB)"
-  uname -pars
-  free -m
+  uname -pars | applyLogPrefix
+  free -m | applyLogPrefix
 fi
 
 ##########################################

scripts/start-utils

@@ -125,6 +125,12 @@ function logn() {
   echo -n "[init] $*"
 }
 
+# Use as
+# cmd | applyLogPrefix
+function applyLogPrefix() {
+  sed 's/^/[init] /'
+}
+
 function log() {
   local oldState
   # The  return  status  when listing options is zero if all optnames are enabled, non- zero otherwise.