net: init-metrics.sh - urlencode influx password (#5594)

* net: init-metrics.sh - urlencode influx password

* old backticks bad!

* Move urlencode() to common.sh

* Make urlencode() vars local

Co-Authored-By: Michael Vines <mvines@gmail.com>

net/common.sh

@@ -76,3 +76,21 @@ loadConfigFile() {
   buildSshOptions
   configureMetrics
 }
+
+# https://gist.github.com/cdown/1163649
+urlencode() {
+  declare s="$1"
+  declare l=$((${#s} - 1))
+  for i in $(seq 0 $l); do
+    declare c="${s:$i:1}"
+    case $c in
+      [a-zA-Z0-9.~_-])
+        echo -n "$c"
+        ;;
+      *)
+        printf '%%%02X' "'$c"
+        ;;
+    esac
+  done
+}
+