[Bug] use HTTPS addresses in build scripts

[pjfanning]

Bug Type (问题类型)

other exception / error (其他异常报错)

Before submit

• 我已经确认现有的 Issues 与 FAQ 中没有相同 / 重复问题 (I have confirmed and searched that there are no similar problems in the historical issue and documents)

Environment (环境信息)

• Server Version: 1.0.0 (Apache Release Version)
• Backend: RocksDB x nodes, HDD or SSD
• OS: xx CPUs, xx G RAM, Ubuntu 2x.x / CentOS 7.x
• Data Size: xx vertices, xx edges

Expected & Actual behavior (期望与实际表现)

https://github.com/search?q=repo%3Aapache%2Fhugegraph%20http%3A%2F%2Farchive&type=code

This shows 2 scripts that download from http://archive.apache.org. This should be https.

I'm guessing that since Travis is mentioned in the file path that these are outdated scripts.
Can they be removed if unused?

Similar issues in https://github.com/apache/hugegraph-toolchain (with HTTP URLs in build scripts)

Vertex/Edge example (问题点 / 边数据举例)

Schema [VertexLabel, EdgeLabel, IndexLabel] (元数据结构)

[lokidundun]

I would like to take this