Java client issues batch 3 (#2485)

* put lifecycle req name optional (456)

* added script to witdh histogram (457)

* typo fix dynamic type (spec issue 1558) (460)

* primary term optional index req (472)

* added escaped_tags property to htmlstrip (528)

* regen

* remove per_field_analyzer from mlt query (533)

* min and max optional in extendedBounds (555)

* allow_auto_create added to putIndexTemplate req (571)

* added composite to runtime fields (551)

* removed fields from aggregation (466,766), response for sim index (572)

* sim index req name optional

* added new class learning_to_rank to rescore (506)

* fixed simulate index template and simulate template

* sim index temp name required, added query params

* Revert "allow_auto_create added to putIndexTemplate req (571)"

This reverts commit de46d9e.

* regen

* Update specification/_global/search/_types/rescoring.ts

model_id in ltr rescorer should not be optional

Co-authored-by: Laurent Saint-Félix <[email protected]>

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Co-authored-by: Laurent Saint-Félix <[email protected]>