Move product templates into a single folder

Author: PramodValavala-MSFT

example/product-starter/product-starter.template.json renamed to example/products/product-starter.template.json

@@ -37,7 +37,7 @@
             "name": "[concat(parameters('ApimServiceName'), '/unlimited/policy')]",
             "apiVersion": "2018-01-01",
             "properties": {
-                "policyContent": "[concat(parameters('repoBaseUrl'), '/product-unlimited/product-unlimited.policy.xml')]",
+                "policyContent": "[concat(parameters('repoBaseUrl'), '/products/product-unlimited.policy.xml')]",
                 "contentFormat": "rawxml-link"
             },
             "dependsOn": [