Split authentication policies into public definition, private implementation

[eddyashton]

A relatively standalone part of #2428.

This moves the existing auth policies from http/authentication to endpoints/authentication, and splits out the private implementation from the public definition. This gives each a clean public interface.

In practice, this exposes that the current publicly available types don't make it easy for apps to implement their own auth policies! But we will deal with that separately, and likely get most of the win from moving service table definitions to public.

[ghost]

private_auth_impl@41652 aka 20220210.27 vs main ewma over 20 builds from 41340 to 41640

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)^
41340	20220207.4	5933.18	9.08371e+07	20018.2	1.71746e+07	5662.96	1.58639e+07	2573.97	1.03588e+07	1670.89	1.64237e+08	2247.52	9.57242e+06	1488.63	9.84392e+07	1967.81	9.57242e+06	17636.8	905589	1.36052e+06	9.33025e+06	3.56788e+07
41378	20220207.19	6130.79	9.13613e+07	19815.1	1.76989e+07	5635.16	1.56017e+07	2525.31	1.03588e+07	1616.34	1.63189e+08	2156.48	1.03588e+07	1453.63	9.87014e+07	1955.01	9.04813e+06	20506.3	899819	1.37486e+06	9.11433e+06	3.58669e+07
41385	20220208.2	6097.09	9.13613e+07	19823.7	1.63882e+07	5673.81	1.58639e+07	2582.06	1.03588e+07	1652.63	1.63975e+08	2197.66	9.83456e+06	1483.91	9.81771e+07	2011.93	8.78598e+06	20492.9	909361	1.39034e+06	9.23758e+06	3.56788e+07
41414	20220208.13	5927.14	9.00506e+07	19793.2	1.71746e+07	5569.71	1.56017e+07	2537.67	1.21939e+07	1631.88	1.63975e+08	2195.95	1.03588e+07	1469.44	9.87014e+07	1872.48	9.04813e+06	21149.5	899075	1.38015e+06	9.20855e+06	3.58663e+07
41424	20220208.17	5892.72	9.10992e+07	19642.2	1.74367e+07	5644.26	1.58639e+07	2630.21	1.00967e+07	1612.53	1.64237e+08	2194.64	1.00967e+07	1463.34	9.84392e+07	1970.43	9.31027e+06	17955.7	891748	1.40273e+06	9.38154e+06	3.58042e+07
41442	20220208.24	6063.56	9.08371e+07	19663.5	1.6126e+07	5545.24	1.58639e+07	2537.16	1.03588e+07	1628.47	1.61878e+08	2154.81	9.83456e+06	1484.86	9.87014e+07	1969.91	9.31027e+06	18164.9	871518	1.33515e+06	9.34724e+06	3.45363e+07
41464	20220208.33	5925.87	9.08371e+07	19792.5	1.6126e+07	5663.15	1.56017e+07	2513.25	1.03588e+07	1602.19	1.64237e+08	2147.73	1.00967e+07	1447.26	9.87014e+07	1971.86	9.04813e+06	22552.4	890972	1.38762e+06	9.08192e+06	3.51884e+07
41476	20220208.38	6108.3	8.92642e+07	19761.2	1.6126e+07	5590.68	1.63882e+07	2520.4	1.03588e+07	1640.14	1.63713e+08	2154.25	1.00967e+07	1467.58	9.89635e+07	2006.82	1.11453e+07	18294.9	907593	1.39139e+06	9.22099e+06	3.58036e+07
41485	20220208.41	5875.4	9.03128e+07	19704.3	1.69124e+07	5598.69	1.56017e+07	2541.06	1.03588e+07	1653.24	1.63189e+08	2241.8	9.57242e+06	1468.4	9.84392e+07	1974.01	9.31027e+06	19873	897021	1.37486e+06	9.25436e+06	3.58669e+07
41488	20220209.1	6038.53	8.97885e+07	19812.6	1.69124e+07	5685.19	1.56017e+07	2527.05	1.0621e+07	1669.72	1.645e+08	2219.01	9.83456e+06	1491.83	9.84392e+07	1977.17	9.31027e+06	18255.3	889076	1.37837e+06	9.27952e+06	3.58036e+07
41514	20220209.12	6071.17	9.10992e+07	18864.8	1.63882e+07	5632.81	1.58639e+07	2545.77	1.03588e+07	1652.96	1.61616e+08	2165.42	1.27181e+07	1501.07	9.87014e+07	1969.25	9.31027e+06	20114.8	892446	1.38097e+06	9.33876e+06	3.56174e+07
41527	20220209.17	6034.5	9.00506e+07	19775.5	1.6126e+07	5623.72	1.56017e+07	2529.44	1.03588e+07	1623.27	1.63975e+08	2126.18	1.00967e+07	1474.11	9.84392e+07	1963.83	9.31027e+06	20205.4	905267	1.37532e+06	9.39445e+06	3.65062e+07
41534	20220209.20	6036.01	9.13613e+07	19896.1	1.69124e+07	5580.65	1.56017e+07	2530.8	1.03588e+07	1646.76	1.63451e+08	2168.1	1.00967e+07	1504.47	9.79149e+07	1929.74	9.31027e+06	22235.8	912162	1.36723e+06	9.20441e+06	3.59292e+07
41547	20220209.26	6036.27	9.08371e+07	19700.5	1.6126e+07	5594.69	1.53396e+07	2542.87	1.29803e+07	1625.52	1.63451e+08	2200.49	9.83456e+06	1475.31	9.81771e+07	1969.1	9.04813e+06	22163.7	909449	1.38415e+06	9.20441e+06	3.66362e+07
41567	20220209.35	5906.25	9.05749e+07	19241.8	1.71746e+07	5663.31	1.58639e+07	2531.73	1.0621e+07	1642.12	1.64237e+08	2166.17	9.83456e+06	1468.37	9.87014e+07	1976.81	9.04813e+06	23087.8	916900	1.36469e+06	9.27108e+06	3.56794e+07
41584	20220210.2	6131.01	9.00506e+07	19960.8	1.63882e+07	5654.11	1.56017e+07	2551.73	1.0621e+07	1664.92	1.64762e+08	2206.48	1.00967e+07	1487.85	9.87014e+07	1969.6	9.31027e+06	19737.3	904549	1.36962e+06	9.20028e+06	3.55556e+07
41595	20220210.5	6094.36	9.13613e+07	19008.7	1.6126e+07	5611.82	1.58639e+07	2543.01	1.03588e+07	1660.12	1.64237e+08	2245.55	9.57242e+06	1482.34	9.87014e+07	1973.56	9.31027e+06	20238.4	928160	1.37976e+06	9.48583e+06	3.55556e+07
41607	20220210.9	5970.44	9.08371e+07	19549.1	1.71746e+07	5654.98	1.56017e+07	2528.94	1.08831e+07	1620.85	1.63713e+08	2163.72	9.83456e+06	1454.39	9.87014e+07	1969.85	9.31027e+06	22234.4	914240	1.40562e+06	9.25018e+06	3.58669e+07
41615	20220210.12	6272.34	9.18856e+07	19849.9	1.6126e+07	5602.53	1.56017e+07	2461.72	1.0621e+07	1635.23	1.63451e+08	2207.88	1.00967e+07	1487.32	9.84392e+07	1975	9.31027e+06	20586.9	896039	1.35817e+06	9.37725e+06	3.58042e+07
41640	20220210.23	5899.71	9.00506e+07	19670.6	1.66503e+07	5734.4	1.58639e+07	2540.7	1.03588e+07	1642.61	1.64237e+08	2176.52	1.00967e+07	1480.44	9.89635e+07	1932.21	9.04813e+06	17956.9	905223	1.36906e+06	9.26684e+06	3.58042e+07

private_auth_impl

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)^
41652	20220210.27	6034.13	9.08371e+07	19725	1.58639e+07	5605.05	1.53396e+07	2543.7	1.27181e+07	1645.06	1.64237e+08	2168.06	9.83456e+06	1458.73	9.84392e+07	1923.31	9.31027e+06	19877.1	905828	1.36952e+06	9.39876e+06	3.57411e+07