[Feat] Compatible with TensorFlow 2.15

[MoFHeka]

Description

Brief Description of the PR:

• Be compatible with TensorFlow 2.15 by calling the origin python function from new directory.
• Fix some test should not be run when eager mode. Also add more new test for Redis KV backend.
• Fix Redis backend json config file would not printed when a wrong json value type was set.
• Fix check wrong array index in kvs_reply from Redis returning. Wanted to check the length of value, but the length of key was checked.

Type of change

• Bug fix
• New Tutorial
• Updated or additional documentation
• Additional Testing
• New Feature

Checklist:

• I've properly formatted my code according to the guidelines
  • By running yapf
  • By running clang-format
• This PR addresses an already submitted issue for TensorFlow Recommenders-Addons
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

How Has This Been Tested?

Run all test script under TF2.15 environment.

[rhdong]

LGTM

[rhdong]

Hi @MoFHeka, we need a separate PR for switching the TF version in the CI and release.

[jq]

👍🏻 when will we have this release to https://pypi.org/project/tensorflow-recommenders-addons/0.6.0/ ?