Disable auth by default

Author: bstewartlg

src/main/java/ca/uhn/fhir/jpa/starter/security/models/SecurityConfig.java

@@ -12,7 +12,7 @@
 @ConfigurationProperties(prefix = "security")
 public class SecurityConfig {
 	@Getter @Setter
-	Boolean enableAuthentication;
+	Boolean enableAuthentication = false;
 	@Getter @Setter
 	String issuer;
 	@Getter @Setter