javanna 9c847db8af Percolate api: support encoded body as query string param consistently
The percolate api doesn't parse the encoded body provided as `source` query string parameter, when percolating an existing document. Fixed and added REST test that would have caught this since we randomly use GET + encoded `source` param instead of GET + request body in our java runner (the perl runner does the same too).

Closes #9628
2015-02-11 08:53:04 +11:00
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