Add test to follow multi-threading.

8 jobs for master in 3 minutes and 1 second (queued for 2 seconds)
Name Stage Failure
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robotpkg-dynamic-graph-v3-18.04-release Test
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robotpkg-dynamic-graph-v3-stretch-release Test
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format Test
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robotpkg-dynamic-graph-v3-stretch-debug Test
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robotpkg-dynamic-graph-v3-18.04-debug Test
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