Add I18N support to qmltestrunner
Add I18N support to qmltestrunner

Add a new command line option "-translation file" to handle translation
files to qmltestrunner.

Task-number:QTBUG-22390
Change-Id: I351ed41734c79a51e00aeef551af642482bf36f2
Reviewed-by: Michael Brasser <acf66a4a6ae67569abc58c29c7a264afd3e1cc1c@nokia.com>
Reviewed-by: Yunqiao Yin <25fb2aad3521dfc99c20c23480a10158b6555533@nokia.com>

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