Add support to submit Rmpi job on OpenLava#83

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Commits on Mar 20, 2015

Rmpi on OL
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add rmpi example for OL
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Update submitJob API interface for LSF, mpi job support feature: todo.
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update job template file name
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Commits on Mar 24, 2015

fix mpi exit in example to keep consistency between R job and OL job
openlava
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Commits on Mar 25, 2015

no need to change LSF
openlava
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