REST high-level client: add force merge API#28896

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javanna merged 7 commits intoelastic:masterfrom

PnPie:rest_hightlevel_client_force_merge

Mar 22, 2018

Commits on Mar 4, 2018

Commits on Mar 6, 2018

Modify for request on All indices & add tests
PnPie
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Commits on Mar 20, 2018

Commits on Mar 22, 2018

Merge branch 'master' into rest_hightlevel_client_force_merge
javanna
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