Revert "set value required in constant_keyword field type"

[dblock]

Reverts #419

Merged too fast. The fix opensearch-project/OpenSearch#14651 has not been merged.

@kkewwei am I understanding this correctly? In which case reopen your PR in draft and mark the test >= 2.16?

[github-actions]

Changes Analysis

Commit SHA: 92f875d
Comparing To SHA: 7e1a233

API Changes

Summary

└─┬Components
  └─┬_common.mapping:ConstantKeywordProperty
    └─┬ALLOF
      ├──[➖] required (33544:15)❌ 
      └─┬value
        └──[🔀] type (33537:21)❌ 

Document Element	Total Changes	Breaking Changes
components	2	4

• ❌ BREAKING Changes: 4 out of 2
• Modifications: 1
• Removals: 1
• Breaking Removals: 1
• Breaking Modifications: 1

Report

The full API changes report is available at: https://github.com/opensearch-project/opensearch-api-specification/actions/runs/9976470956/artifacts/1711203247

API Coverage

	Before	After	Δ
Covered (%)	483 (47.31 %)	483 (47.31 %)	0 (0 %)
Uncovered (%)	538 (52.69 %)	538 (52.69 %)	0 (0 %)
Unknown	24	24	0

[kkewwei]

@dblock constant_keyword is introduced in 2.14(https://opensearch.org/docs/2.14/field-types/supported-field-types/constant-keyword/), and it has bug, I don't know if I answered your question.

[dblock]

@dblock constant_keyword is introduced in 2.14(https://opensearch.org/docs/2.14/field-types/supported-field-types/constant-keyword/), and it has bug, I don't know if I answered your question.

Does this feature work at all in >= 2.14?

This fails for me in 2.14 with a timeout (and a server-side error that looks like opensearch-project/OpenSearch#14651), so I think the right thing to do is to revert these tests. We can merge them when the bug is fixed.

ERROR   constant_keyword.yaml (/Users/dblock/source/opensearch-project/opensearch-api-specification/dblock-opensearch-api-specification/tests/mapping/constant_keyword.yaml)
    PASSED  PROLOGUES
        PASSED  PUT /movies
    ERROR   CHAPTERS
        ERROR   Create a document.
            PASSED  PARAMETERS
                PASSED  index
            PASSED  REQUEST BODY
            ERROR   RESPONSE STATUS (Expected status 201, but received 503: application/json. [movies][0] primary shard is not active Timeout: [1m], request: [BulkShardRequest [[movies][0]] containing [index {[movies][jk5xwZABmSqzi6U2Pv_V], source[{"genre":"Romantic comedy","year":1991}]}]])
            SKIPPED RESPONSE PAYLOAD BODY
            SKIPPED RESPONSE PAYLOAD SCHEMA
    PASSED  EPILOGUES
        PASSED  DELETE /movies