Enable validation of project id in quotas

New pillar is `designate.server.api.quotas_verify_project_id`,
default in service reclass level is `False`.

Change-Id: I9ebebc1837aecfa0cc522e41e1ee4d2250df75e9
Closes-Issue: PROD-22079
diff --git a/README.rst b/README.rst
index 2ba22ba..5f80bef 100644
--- a/README.rst
+++ b/README.rst
@@ -24,6 +24,7 @@
             rndc_algorithm: hmac-sha512
         api:
           base_uri: 'http://127.0.0.1:9001'
+          quotas_verify_project_id: False
         admin_api:
           enabled: true
           enabled_extensions_admin: quotas
@@ -113,6 +114,10 @@
    In case with Designate tempest plugin (0.2.0) zones quota should be increased to 40, so all
    tests can pass.
 
+.. note::
+   *server:api:quotas_verify_project_id* allows to enable project id verification when setting quotas
+   for project, when Designate will ask Keystone if the project id is valid
+
 Pools pillar for BIND9 master and multiple slaves setup:
 
 .. code:: yaml