* Fix for Issue##549
Catch ClientProtocolException and Update Error Logs
* Fix indentation, checkstyle errors
* Fix for Issue #549
Add fallbacks in Aggregator service when other microservices fail
* Make ProductInventoryClientImpl return null instead of zero in case of failure
* Add custom license header style in order to comply with Google's Checkstyle format
* Update license headers to comply with Google's Checkstyle format
* 988: Took out the apache http component from root pom.xml
* 988: Updated the aggregator sub projects to use java.net.http instead of apache
* 988: Updated the api-gateway-service sub projects to use java.net.http instead of apache
* Applied the code style formatter