Upgrade Core IBM Library for Release 0.15

provider/notification-ibm/pom.xml

@@ -46,7 +46,7 @@
         <dependency>
             <groupId>org.opengroup.osdu</groupId>
             <artifactId>os-core-lib-ibm</artifactId>
-            <version>0.15.0-rc2</version>
+            <version>0.15.2</version>
             <exclusions>
             	<exclusion>
             		<groupId>org.apache.lucene</groupId>

testing/notification-test-ibm/pom.xml

@@ -33,7 +33,7 @@
         <java.version>8</java.version>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <maven.compiler.source>${java.version}</maven.compiler.source>
-        <os-core-lib-ibm.version>0.14.0</os-core-lib-ibm.version>
+        <os-core-lib-ibm.version>0.15.2</os-core-lib-ibm.version>
     </properties>
 
     <dependencies>