Springboot Integration tests improvements

Creation of CpsIntegrationSpecBase
Demonstration of test class implementing CpsIntegrationSpecBase in CpsPersistenceSpec
Tests use reduced liquibase steps, basic bookstore yang model and bookstore json payload

Issue-ID: CPS-1379
Signed-off-by: lukegleeson <luke.gleeson@est.tech>
Change-Id: I38202d0888808d08d85fce1aab45fc43e8b0cec3
diff --git a/integration-test/src/test/resources/application.yml b/integration-test/src/test/resources/application.yml
new file mode 100644
index 0000000..0aefac8
--- /dev/null
+++ b/integration-test/src/test/resources/application.yml
@@ -0,0 +1,37 @@
+# ============LICENSE_START=======================================================
+# Copyright (C) 2023 Nordix Foundation.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+#  SPDX-License-Identifier: Apache-2.0
+#  ============LICENSE_END=========================================================
+
+spring:
+  jpa:
+    ddl-auto: create
+    show-sql: false
+    properties:
+      hibernate:
+        enable_lazy_load_no_trans: true
+        dialect: org.hibernate.dialect.PostgreSQLDialect
+        format_sql: true
+        show_sql: false
+
+  datasource:
+    url: ${DB_URL}
+    username: ${DB_USERNAME}
+    password: ${DB_PASSWORD}
+    driverClassName: org.postgresql.Driver
+    initialization-mode: always
+
+  liquibase:
+    change-log: classpath:liquibase/test-changelog.yaml