Update variable names for ash update

Author: BrandonRomano

lib/yaml_parse.sh

@@ -28,19 +28,18 @@ YamlParse__parse() {
    }'
 }
 
-
 #################################################
 # @param $1: The yaml file to check if there is
 #       a key
 # @param $2: The key to check if it exists
-# @echo: $Ash__true if the key exists,
-#       $Ash__false otherwise
+# @echo: $Ash__TRUE if the key exists,
+#       $Ash__FALSE otherwise
 #################################################
 YamlParse__has_key() {
     local line=$(grep -x "^$2:.*" "$1")
     if [[ "$line" != "" ]]; then
-        echo "$Ash__true"
+        echo "$Ash__TRUE"
     else
-        echo "$Ash__false"
+        echo "$Ash__FALSE"
     fi
 }