Expand corpus, make one-shot runners not self-check leaks (to give ASAN a chance)

test/core/client_config/uri_fuzzer_test.c

test/core/end2end/fuzzers/api_fuzzer.c

test/core/end2end/fuzzers/client_fuzzer.c

test/core/end2end/fuzzers/server_fuzzer.c

...er_fuzzer_corpus/05551028437699c8650f5d08eb5f95ee25adf436

...er_fuzzer_corpus/06285b50669cc16463db009ac821f99cf1ec2e24

...er_fuzzer_corpus/23c582f6e23c7bbc9ae7b039b3b4e2ccdea3d5d2

...er_fuzzer_corpus/395aea4fcfea081fc0d2733fff2d14405439fa72

...er_fuzzer_corpus/404e234751b01dd0b51f9e7610f787253b074528

...er_fuzzer_corpus/4123bd764c04385191342ea64918408140313714

...er_fuzzer_corpus/4f96a5fba4d11401eb22d4b1e365fbbb2d684f24

...er_fuzzer_corpus/609706c57e848ea58d7ca14fe6cc253322f3e8ce

...er_fuzzer_corpus/89cd90fb47bb9eb289e8126b26021ee00d572d95

...er_fuzzer_corpus/99a1acc96512c1155f91afa378e2345726d307c3

...zer_corpus/crash-ccf36bef9318fe6d5e5e1560c5485cdc87d0a701

...er_fuzzer_corpus/ec4949487fa84f0cead39521b51f837af9dc784a

...corpus/slow-unit-0292270056246b7a4ccd2e7d0356665cef307ef2

...corpus/slow-unit-098ec93ded3a20e6043d11e9cc6066351e257f8e

...corpus/slow-unit-1dc659f500e7bee41a4fee4423ade8332c162cc0

...corpus/slow-unit-350b5da741597222c98fe86768432507850317f5