Add cocotb testbench runner #1313

Job	Run time
make_boot / make_boot (zynq, PandABox-no-fmc)	5m 5s
cocotb_test / cocotb_test	5m 6s
make_boot / make_boot (zynqmp, xu5_st1-no-fmc)	5m 6s
make_boot / make_boot (zynqmp, PandABrick)	5m 6s
make_zpkg / make_zpkg (PandABox-no-fmc)	5m 5s
test_matrix / test_matrix	1m 33s
make_zpkg / make_zpkg (PandABox-fmc_24vio)	5m 6s
make_zpkg / make_zpkg (PandABox-fmc_acq427)	5m 5s
make_zpkg / make_zpkg (PandABox-fmc_acq430)	5m 4s
test_python_autogen / test_python_autogen	3m 25s
make_zpkg / make_zpkg (PandABox-fmc_lback-sfp_lback)	5m 5s
make_zpkg / make_zpkg (PandABrick)	5m 4s
make_zpkg / make_zpkg (xu5_st1-no-fmc)	5m 4s
make_zpkg / make_zpkg (xu5_st1-fmc_acq430)	5m 3s
test_hdl / test (pcap pgen)	1m 30s
test_hdl / test (seq posenc clock)	1m 25s
test_hdl / test (pcomp lut div bits)	1m 35s
test_hdl / test (counter filter calc)	1m 28s
test_hdl / test (pulse srgate qdec)	1m 26s
release	1s
	1h 13m 22s

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