Fetch error message in root cause for new default formatter

[dai-chen]

Issue #, if available: #1002

Description of changes: Reuse existing ErrorMessage and ErrorMessageFactory to extract root cause info from Elasticsearch search. After changed, the error response is exactly same as that of old engine and PPL.

Testing: UT and manual verification as below

Without the fix:

PUT _settings
{
  "index.max_result_window": 100
}

POST _opendistro/_sql/
{
  "query": """
    SELECT * FROM accounts
  """
}
{
  "error": {
    "type": "SearchPhaseExecutionException",
    "reason": "all shards failed",
    "details": "all shards failed"
  },
  "status": 400
}

After the fix:

{
  "error": {
    "type": "SearchPhaseExecutionException",
    "reason": "Error occurred in Elasticsearch engine: all shards failed",
    "details": "Shard[0]: java.lang.IllegalArgumentException: Result window is too large, from + size must be less than or equal to: [100] but was [200]. See the scroll api for a more efficient way to request large data sets. This limit can be set by changing the [index.max_result_window] index level setting.\n\nFor more details, please send request for Json format to see the raw response from elasticsearch engine."
  },
  "status": 400
}

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Merging #1001 (d8c3deb) into develop (c5ea315) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             develop    #1001   +/-   ##
==========================================
  Coverage      99.87%   99.87%           
  Complexity      2406     2406           
==========================================
  Files            234      234           
  Lines           5524     5526    +2     
  Branches         357      357           
==========================================
+ Hits            5517     5519    +2     
  Misses             5        5           
  Partials           2        2           

Impacted Files	Coverage Δ	Complexity Δ
...sticsearch/response/error/ErrorMessageFactory.java	100.00% <ø> (ø)	5.00 <0.00> (ø)
...sql/elasticsearch/response/error/ErrorMessage.java	100.00% <100.00%> (ø)	9.00 <1.00> (ø)
...rotocol/response/format/JdbcResponseFormatter.java	100.00% <100.00%> (ø)	11.00 <1.00> (ø)

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[penghuo]

LGTM