Avoid NumberFormatException while trying to construct an Integer with @Value annotation

[sumanthreddybandi]

Motivation

Getting NumberFormatException on my spring-boot app while integrating with EJMask library

Proposed Changes

• changing the format - https://stackoverflow.com/questions/49793547/spring-value-always-gives-an-error-if-property-is-integer
• adding getters for MaskingPattern

Test Plan

I was able to bring up my spring boot app in local & test masking

[sumanthreddybandi]

Closing this as not all commits are signed