[elasticsearch-plugin] Better error output

[Izayda]

Is your feature request related to a problem? Please describe.
Now, if i have some error in elastic while request execution, i'll mostly get only search_phase_execution_exception. Elastic is terrible and very difficult in its configuration, so, some errors can occur due inappropriate configuration only on some specific installation of Vendure.

To get real error i need to do aт investigation each time.
For example:

1. I get search_phase_execution_exception after adding to search query prices ranges.
2. Then i look into Vendure source code to understand where there can be error. In current case, there is only one query to elastic, so, i have an idea that while aggregation elastic get too many buckets
3. I deploy Vendure from source and change config to searchConfig: { priceRangeBucketInterval: 1, }, and than get similar error on default populated data
4. Then i add

try {
    await this.client.search({
                index: indexPrefix + VARIANT_INDEX_NAME,
                body: elasticSearchBody,
    });
} catch (e) {
    console.dir(e, { depth: null });
}

to get real error Trying to create too many buckets. Must be less than or equal to: [65535] but was [641402]. This limit can be set by changing the [search.max_buckets] cluster level setting.

Describe the solution you'd like
I would like to get real elastic error in Vendure logs.

Describe alternatives you've considered
To configure elastic to log all errors (it's slowly and awful in configuration).

[Izayda]

Hi! I'm not sure this issue should be closed, cause i fix error output only for reindexing.

[michaelbromley]

I believe the errors during search were handled by this commit: d300f8b#diff-d10b5c5b32aa60b16131727742c8a9647664cbe926eb4fed17a0c15bf79c285bR199

[Izayda]

Oh, sure, sorry. Didn't notice, that @Draykee fixed it.