making log entry more descriptive

Author: ORybak5

service/src/main/java/uk/nhs/adaptors/gp2gp/common/configuration/AppInitializer.java

@@ -39,6 +39,7 @@ public S3Client getS3Client() throws ConfigurationException {
             return S3Client.builder().build();
         }
 
-        throw new ConfigurationException("S3Client cannot be instantiated due to trust store URL misconfiguration");
+        throw new ConfigurationException("S3Client cannot be instantiated: "
+                                         + "Trust store URL is either not set or does not start with the 's3://' prefix.");
     }
 }

service/src/test/java/uk/nhs/adaptors/gp2gp/common/configuration/AppInitializerTest.java

@@ -9,7 +9,8 @@
 
 class AppInitializerTest {
 
-    public static final String EXPECTED_ERROR_MESSAGE = "S3Client cannot be instantiated due to trust store URL misconfiguration";
+    public static final String EXPECTED_ERROR_MESSAGE = "S3Client cannot be instantiated: "
+                                                        + "Trust store URL is either not set or does not start with the 's3://' prefix.";
     private AppInitializer appInitializer;
     private StorageConnectorConfiguration storageConnectorConfiguration;