Origin/sp dev log4j

[swapnilpatil543]

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Thank you for contributing to JanusGraph!

In order to streamline the review of the contribution we ask you to ensure the following steps have been taken:

For all changes:

• [ ] Is there an issue associated with this PR? Is it referenced in the commit message?
• [ ] Does your PR body contain #xyz where xyz is the issue number you are trying to resolve?
• [ ] Has your PR been rebased against the latest commit within the target branch (typically master)?
• [ ] Is your initial contribution a single, squashed commit?

For code changes:

• [ ] Have you written and/or updated unit tests to verify your changes?
• [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• [ ] If applicable, have you updated the LICENSE.txt file, including the main LICENSE.txt file in the root of this repository?
• [ ] If applicable, have you updated the NOTICE.txt file, including the main NOTICE.txt file found in the root of this repository?

For documentation related changes:

• [ ] Have you ensured that format looks appropriate for the output in which it is rendered?

[linux-foundation-easycla[bot]]

• :x: The commit (89ebbcf330a67ed115426f8c44ae6f8b871b142e ,a4a7095a9d28c71d078e3bfba4db09b741c9a510) is missing the User's ID, preventing the EasyCLA check. Consult GitHub Help to resolve.For further assistance with EasyCLA, please submit a support request ticket.

[janusgraph-bot]

Please verify the committer name, email, and GitHub username association are all correct and match CLA records.

[farodin91]

@swapnilpatil543 Here is an example to upgrade elasticsearch: https://github.com/JanusGraph/janusgraph/pull/2743/files

[FlorianHockmann]

Closing this as the Elasticsearch version is already higher by now.