unified dependencies version#4

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bigbangtomato wants to merge 5 commits intosaturnism:masterfrom

bigbangtomato:master

Commits on Apr 8, 2017

add logback config file, and add springboot module into root pom.xml
jixianzhao
committed

Commits on Apr 14, 2017

refactor grpc client.
jixianzhao
committed

Commits on Apr 16, 2017

spring-boot-starter-parent 1.5.2.RELEASE.
jixianzhao
committed
remove parent pom from module springboot.
jixianzhao
committed
arrange pom.xml's dependencies.
jixianzhao
committed