Update secretProviderClass.json

Author: manisha-tanwar

schemas/secretProviderClass.json

@@ -43,8 +43,8 @@
         "description": "The path where files named after the objectNames will be created containing the secret"
       },
       "enableEnvVars": {
-        "type": "string",
-        "enum": ["true", "false"],
+        "type": "boolean",
+        "default": true
         "description": "Flag to enable environment variables"
       },
       "objects": {