[TEST] resolved warning in IndexedScriptTests
_boost: Fix "index" setting

Serialization if "index" setting for boost did not work since
the serialization was just true/false instead of valid options
"no"/"not_analyzed"/"analyzed".

closes #7557
[TEST] replaced assert with actual assertions in TemplateQueryTest
[TEST] added test to verify GetIndexedScriptRequest serialization after recent changes
Aggregations: Fixes resize bug in Geo bounds Aggregator

Closes #7556