Merge pull request Netflix#1170 from Netflix/qiangdavidliu-patch-4

sanitize metadata map for empty values

Merge pull request Netflix#1155 from mgtriffid/eureka-1154

EUREKA-1154 Return 404 if instance is not found when updating metadata

Merge pull request Netflix#1152 from elandau/improve_logging

Improved logging

Merge pull request Netflix#1140 from Netflix/qiangdavidliu-patch-3

update default server's eureka-client property

Add User-Agent when requesting information from AWS Metadata service (N…

…etflix#1122)

Merge pull request Netflix#1108 from PropertyOfTuckerSystems/pts/aws-…

…asg-interface

Add an interface for AwsAsgUtil

Merge pull request Netflix#1088 from tdanylchuk/fix-healthcheck-handl…

…er-concurrent-register

Concurrent register of custom healthcheck handler in DiscoveryClient

Merge pull request Netflix#1080 from qiangdavidliu/master

one more change to relax parsing compatibility due to overiddenstatus casing change

Merge pull request Netflix#1079 from qiangdavidliu/master

change overriddenstatus field name in pojo to allow for better serialization compatibility

Merge pull request Netflix#1060 from qiangdavidliu/master

address dangling PR comments for PRs Netflix#976 and Netflix#1003