[FLINK-13751][ml] Add Built-in vector types

[xuyang1706]

What is the purpose of the change

Built-in vector types is the TypeInformation of Vector, DenseVector and SparseVector.

Brief change log

• Add the class of the Built-in vector types
• Add the test cases

Verifying this change

This change added tests and can be verified as follows:

• run test case pass

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yes)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (yes)
• If yes, how is the feature documented? (JavaDocs)

[flinkbot]

Thanks a lot for your contribution to the Apache Flink project. I'm the @flinkbot. I help the community
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Automated Checks

Last check on commit 2e74776 (Wed Aug 28 15:42:48 UTC 2019)

Warnings:

• No documentation files were touched! Remember to keep the Flink docs up to date!
• This pull request references an unassigned Jira ticket. According to the code contribution guide, tickets need to be assigned before starting with the implementation work.

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Review Progress

• ❓ 1. The [description] looks good.
• ❓ 2. There is [consensus] that the contribution should go into to Flink.
• ❓ 3. Needs [attention] from.
• ❓ 4. The change fits into the overall [architecture].
• ❓ 5. Overall code [quality] is good.

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Details

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[flinkbot]

CI report:

• 2d53d67 : CANCELED Build
• b251fc3 : FAILURE Build
• 2e74776 : FAILURE Build

[cainingnk]

Tranks a lot for your contribution.

[cainingnk]

It seems 'br' can be deleted?

[xuyang1706]

thx, it has been removed

[shaomengwang]

@xuyang1706 thrank for your patch. LGFM

[becketqin]

Thanks for the patch. LGTM.

[becketqin]

Merged to master:
11258f3