Added sha512 code for binary package.
Changed version to 0.8.0-SNAPSHOT.

* remove unbundled dependencies from NOTICE and NOTICE-binary; add License-binary

* move some license declaration from LICENSE to LICENSE-binary

* add NOTICE-binary and LICENSE-binary to the binary tar.gz file

* rename License to LICENSE

* add source code declaration with MavenWrapper

* change the root name as incubating-iotdb-parent

* add DISCLAIMER file

(cherry picked from commit f1442f41)

* add  to skip all UTs: maven integration-test -DskipUTS=true

* change the profile of skipUT_IoTDBTests to skipUT_IoTDB_Tests

1. modify asf header for each file; 2. enable apache-rat-plugin; 3. add more exclusive files on apache-rat-plugin and license-maven-plugin, i.e., *.json, *.md, and *.csv

* format Almost for obeying Google Java Style.

* fix the problem of checkstyle

* fix license-format template file location

* add apache header check plugin

* add fotmat plugin

* move format code to verify phase

* change to compile phase

* change to verify phase

* remove special char in .travis

* remove useless code

* add apach header and format codes

* Update MavenWrapperDownloader.java

* Remove plugin duplicates in POM to avoid warnings

* - Added Apache compatible version of the maven wrapper
- Streamlined the maven build to be more align with the way Apache needs projects to be built

* - Fine tuned the build to produce a valid Spring Boot application for the grafana module.