Increase timeout for cluster scale operation and use string comparison

Change-Id: I512177a4ae7be04bd52677a89861b4558478b76d
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/osm_lcm/k8s.py b/osm_lcm/k8s.py
index 67173e7..b5a1f9e 100644
--- a/osm_lcm/k8s.py
+++ b/osm_lcm/k8s.py
@@ -1286,7 +1286,7 @@
                         "jsonpath_filter": "status.atProvider.defaultNodePool[0].nodeCount",
                         "value": f"{op_params['node_count']}",
                     },
-                    "timeout": self._checkloop_resource_timeout * 2,
+                    "timeout": self._checkloop_resource_timeout * 3,
                     "enable": True,
                     "resourceState": "IN_PROGRESS.RESOURCE_READY.NODE_COUNT.CLUSTER",
                 }