Rename Plugin to QueuePlugin #321

Job	Run time
testsuite / testsuite-linux (8.2, sqlite, lowest, false)	31s
testsuite / testsuite-linux (8.5, sqlite, highest, false)	26s
cs-stan / Coding Standard & Static Analysis	30s
testsuite / testsuite-linux (8.3, sqlite, highest, false)	34s
testsuite / testsuite-linux (8.4, mysql, highest, false)	29s
testsuite / testsuite-linux (8.2, mysql, highest, false)	42s
testsuite / testsuite-linux (8.2, pgsql, highest, false)	25s
	3m 37s

Provide feedback