Add show quota details to network quotas_client library

This patch adds show quota details API to network quotas_client library
and also adds test cases for this new feature.

Change-Id: I1d229d7903db719369fd8ec0eb0bd2ce4d15978f
diff --git a/releasenotes/notes/add-show-quota-details-api-to-network-quotas-client-3fffd302cc5d335f.yaml b/releasenotes/notes/add-show-quota-details-api-to-network-quotas-client-3fffd302cc5d335f.yaml
new file mode 100644
index 0000000..406e282
--- /dev/null
+++ b/releasenotes/notes/add-show-quota-details-api-to-network-quotas-client-3fffd302cc5d335f.yaml
@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Add extension API show quota details to network quotas_client library.
+    This feature enables the possibility to show a quota set for a specified
+    project that includes the quota’s used, limit and reserved counts for per
+    resource