Infra: Ignore backport prefix in branch name in LTS test

[jumaffre]

Resolves #4090

The LTS compatibility test deduces the version(s) with which to test compatibility based on the name of the local branch/tag. However, the backport GitHub Action automatically creates a branch prefixed with backport/ to backport the changes (see for example here), which breaks the assumptions of the LTS compatibility, which will always run the LTS compatibility test as if it was run on main (i.e. skipping compatibility test with the previous LTS).

This PR fixes this, so that the backport/ prefix is ignored by the LTS compatibility test.

[ghost]

lts_compatibility_backport_branch_name@48280 aka 20220803.9 vs main ewma over 20 builds from 47939 to 48267

Click to see table

main

build_id	build_number	tpcc_sgx_cft^	tpcc_sgx_cft_mem	ls_sgx_cft^	ls_sgx_cft_mem	ls_jwt_sgx_cft^	ls_jwt_sgx_cft_mem	ls_js_sgx_cft^	ls_js_sgx_cft_mem	ls_v8_sgx_cft^	ls_v8_sgx_cft_mem	ls_full_js_sgx_cft^	ls_full_js_sgx_cft_mem	ls_full_v8_sgx_cft^	ls_full_v8_sgx_cft_mem	ls_js_jwt_sgx_cft^	ls_js_jwt_sgx_cft_mem	hist_sgx_cft^	RB put (/s)^	CHAMP put (/s)^	RB get (/s)^	CHAMP get (/s)^
47939	20220722.7	5985.98	8.37592e+07	19798.5	1.58639e+07	5651.98	1.53396e+07	2551.84	1.00967e+07	1635.45	1.67121e+08	2125.5	9.31027e+06	1420.71	9.81771e+07	1976.48	8.78598e+06	18489.4	888720	1.37669e+06	9.36002e+06	3.58036e+07
47944	20220722.9	6418.19	8.37592e+07	20099.7	1.6126e+07	5601.76	1.56017e+07	2549.59	1.00967e+07	1589.25	1.66859e+08	2126.97	9.31027e+06	1416.11	9.81771e+07	1934.91	9.04813e+06	18668.2	905590	1.36016e+06	9.31328e+06	3.59292e+07
47950	20220722.11	6346.72	8.42835e+07	20498	1.66503e+07	5696.14	1.48153e+07	2547.54	1.00967e+07	1593.79	1.66597e+08	2087.82	9.31027e+06	1417.11	9.76528e+07	1929.17	8.78598e+06	20113.6	900215	1.37311e+06	9.21273e+06	3.56794e+07
47964	20220725.3	6445.58	8.45456e+07	20264.1	1.6126e+07	5715.87	1.53396e+07	2543.74	1.00967e+07	1612.58	1.66597e+08	2108.59	9.31027e+06	1435.99	9.76528e+07	1937.49	1.0621e+07	18993.5	902517	1.33865e+06	9.39876e+06	3.48893e+07
47991	20220726.3	6424.54	8.29727e+07	20484.1	1.58639e+07	5660.34	1.53396e+07	2552.74	1.00967e+07	1590.25	1.66597e+08	2122.4	9.04813e+06	1429.67	9.81771e+07	1926.78	8.78598e+06	20464.4	890933	1.38154e+06	9.48144e+06	3.62478e+07
47999	20220726.6	6463.07	8.3497e+07	20411.6	1.58639e+07	5679.05	1.56017e+07	2544.17	1.00967e+07	1621.25	1.66859e+08	2164.94	9.31027e+06	1426.71	9.84392e+07	2024.37	9.04813e+06	17785.5	908399	1.36251e+06	9.39872e+06	3.65714e+07
48019	20220726.14	6543.72	8.42835e+07	20091.2	1.56017e+07	5601.14	1.50774e+07	2499.24	9.83456e+06	1600.03	1.645e+08	2122.92	9.31027e+06	1420.35	9.79149e+07	2014.48	9.04813e+06	19942.2	903392	1.39861e+06	9.02994e+06	3.59298e+07
48039	20220726.21	6604.8	8.45456e+07	20061.9	1.63882e+07	5657.52	1.53396e+07	2462.46	1.29803e+07	1599.33	1.67121e+08	2133.23	9.04813e+06	1444.67	9.79149e+07	1932.82	9.04813e+06	20529.4	898398	1.37154e+06	9.20445e+06	3.59292e+07
48056	20220727.3	7376.83	8.48077e+07	20455.4	1.58639e+07	5645.94	1.53396e+07	2553.28	1.00967e+07	1612.2	1.66597e+08	2117.56	9.31027e+06	1424.76	9.81771e+07	1932.75	8.78598e+06	18180.7	905868	1.38004e+06	9.22514e+06	3.58669e+07
48076	20220728.1	6377.5	8.45456e+07	20423.6	1.6126e+07	5695.92	1.53396e+07	2536.06	1.03588e+07	1631.52	1.66859e+08	2129.7	9.31027e+06	1436.56	9.81771e+07	1937.91	9.04813e+06	19899.1	861326	1.3754e+06	9.20855e+06	3.55549e+07
48083	20220728.4	6537.16	8.32349e+07	20590.5	1.6126e+07	5720.58	1.56017e+07	2631.03	9.83456e+06	1599.78	1.64762e+08	2126.15	9.31027e+06	1454.7	9.81771e+07	1946.79	9.04813e+06	22317.3	890155	1.36259e+06	9.20855e+06	3.58669e+07
48101	20220728.10	6449.49	8.42835e+07	20328.8	1.56017e+07	5590.59	1.50774e+07	2545.39	1.00967e+07	1608.68	1.66597e+08	2124.69	9.31027e+06	1415.34	9.87014e+07	1928.96	9.04813e+06	19989.8	872335	1.34153e+06	9.21684e+06	3.58663e+07
48116	20220729.2	6419.03	8.40213e+07	20316.1	1.6126e+07	5998.81	1.53396e+07	2559.25	1.00967e+07	1611.63	1.66335e+08	2119.38	9.04813e+06	1399.69	9.63421e+07	1926.59	9.04813e+06	20842.4	905830	1.37219e+06	9.22934e+06	3.61199e+07
48182	20220729.22	7435.73	8.48077e+07	20197.3	1.69124e+07	5628.12	1.56017e+07	2549.84	1.00967e+07	1619.5	1.67121e+08	2151.72	9.57242e+06	1420.17	9.81771e+07	1929.97	9.04813e+06	20385.6	906430	1.3676e+06	9.27108e+06	3.56168e+07
48201	20220729.31	6490.45	8.37592e+07	20065.7	1.6126e+07	5634.34	1.53396e+07	2558.72	1.00967e+07	1588.91	1.66859e+08	2120.95	9.31027e+06	1413.06	9.79149e+07	1935.36	9.04813e+06	21085.2	906511	1.3756e+06	9.31752e+06	3.65708e+07
48214	20220731.3	5763.08	8.40213e+07	20400.8	1.71746e+07	5648.54	1.48153e+07	2559.51	1.00967e+07	1588.95	1.66597e+08	2125.83	9.31027e+06	1413.25	9.81771e+07	1933.22	9.04813e+06	19675.1	904759	1.39453e+06	9.40753e+06	3.59298e+07
48218	20220801.1	6390.34	8.29727e+07	20328.2	1.63882e+07	5687.58	1.53396e+07	2561.95	1.03588e+07	1597.78	1.66597e+08	2119.59	9.04813e+06	1432.89	9.79149e+07	2025.19	9.04813e+06	22238.5	909044	1.37311e+06	9.326e+06	3.57411e+07
48239	20220802.2	6341.07	8.32349e+07	20109.1	1.66503e+07	5683.14	1.56017e+07	2583.4	1.00967e+07	1609.45	1.66597e+08	2124.37	9.31027e+06	1433.98	9.79149e+07	1933.24	9.04813e+06	20349.6	891366	1.37368e+06	9.39881e+06	3.58048e+07
48248	20220802.6	6346.87	8.32349e+07	20263.5	1.6126e+07	5553.34	1.53396e+07	2552.54	1.00967e+07	1590.59	1.66597e+08	2115.99	9.31027e+06	1419.19	9.79149e+07	1937.45	8.78598e+06	18446.5	909334	1.39206e+06	9.28798e+06	3.5189e+07
48267	20220803.3	6373.45	8.45456e+07	20471.7	1.58639e+07	5651.34	1.53396e+07	2611.14	9.83456e+06	1583.33	1.66597e+08	2114.15	9.31027e+06	1395.8	9.81771e+07	1929.23	9.04813e+06	20297.9	902400	1.3769e+06	9.23354e+06	3.56174e+07

lts_compatibility_backport_branch_name

build_id	build_number	tpcc_sgx_cft^	tpcc_sgx_cft_mem	ls_sgx_cft^	ls_sgx_cft_mem	ls_jwt_sgx_cft^	ls_jwt_sgx_cft_mem	ls_js_sgx_cft^	ls_js_sgx_cft_mem	ls_v8_sgx_cft^	ls_v8_sgx_cft_mem	ls_full_js_sgx_cft^	ls_full_js_sgx_cft_mem	ls_full_v8_sgx_cft^	ls_full_v8_sgx_cft_mem	ls_js_jwt_sgx_cft^	ls_js_jwt_sgx_cft_mem	hist_sgx_cft^	RB put (/s)^	CHAMP put (/s)^	RB get (/s)^	CHAMP get (/s)^
48280	20220803.9	6482.22	8.32349e+07	20556.4	1.58639e+07	5690.31	1.53396e+07	2569.43	1.00967e+07	1602.08	1.66597e+08	2160.46	9.04813e+06	1420.05	9.81771e+07	1931.06	9.04813e+06	20636.6	900808	1.37967e+06	9.2335e+06	3.54933e+07