Length limitation added for vip name in network roles

Only 13 symbols of vip name used in vip_generation:
https://review.openstack.org/#/c/215270/18/deployment/puppet/osnailyfacter/lib/puppet/parser/functions/generate_vips.rb,cm
So for pervention name collisions we limit vip name by 13 symbols
in network roles JSON schema.

Change-Id: I749ed7baa712c9ae9c4129702621999ade232987
Closes-Bug: #1488471

fuel_plugin_builder/fuel_plugin_builder/tests/test_validator_v3.py

@@ -433,3 +433,22 @@ class TestValidatorV3(BaseValidator):
                 "File '/tmp/plugin_path/network_roles.yaml',"
                 " 'hap roxy' does not match"):
             self.validator.check_network_roles_schema()
+
+    @mock.patch('fuel_plugin_builder.validators.base.utils')
+    def test_check_network_roles_name_length(self, utils_mock):
+        vip_name = 'a' * 14
+        utils_mock.parse_yaml.return_value = [{
+            "id": "example_net_role",
+            "default_mapping": "public",
+            "properties": {
+                "subnet": True,
+                "gateway": False,
+                "vip": [{
+                    "name": vip_name,
+                    "namespace": "haproxy"}]}}]
+
+        with self.assertRaisesRegexp(
+                errors.ValidationError,
+                "File '/tmp/plugin_path/network_roles.yaml',"
+                " '%s' is too long" % vip_name):
+            self.validator.check_network_roles_schema()

fuel_plugin_builder/fuel_plugin_builder/validators/schemas/v3.py

@@ -193,6 +193,7 @@ class SchemaV3(SchemaV2):
                                     'properties': {
                                         'name': {
                                             'type': 'string',
+                                            'maxLength': 13,
                                             'pattern': NETWORK_ROLE_PATTERN},
                                         'namespace': {
                                             'type': 'string',