Adding parent pom for all testing

This allows the specification of the build order -- specifically, to make sure
that the search-test-core is done prior to any of the specific cloud provider
builds.

testing/integration-tests/pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Copyright 2017-2019, The Open Group
+
+  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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.opengroup.osdu</groupId>
+    <artifactId>os-search</artifactId>
+    <version>0.0.5-SNAPSHOT</version>
+    <description>Search Service Integration Test Root Project</description>
+    <packaging>pom</packaging>
+
+    <licenses>
+    	<license>
+    		<name>Apache License, Version 2.0</name>
+    		<url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
+    		<distribution>repo</distribution>
+    	</license>
+    </licenses>
+
+    <modules>
+        <module>search-test-core</module>
+        <module>search-test-aws</module>
+        <module>search-test-azure</module>
+        <module>search-test-gcp</module>
+    </modules>
+</project>