Proxy address reuse and expiry #499

Job	Run time
Empty APLOGNO() test	40s
Default	4m 2s
All-static modules	4m 2s
Prefork MPM, all-modules (except cgid)	4m 53s
Worker MPM, all-modules	4m 45s
Shared MPMs, all-modules	4m 52s
Event MPM, all-modules, mod_cgid only	4m 28s
Event MPM, all-modules, no CMSG_DATA	5m 27s
Default, all-modules + install	5m 10s
Default, all-modules, random test order	4m 47s
GCC 10 maintainer-mode w/-Werror, install + VPATH	3m 52s
All-modules, APR 1.7.4, APR-util 1.6.3	6m 34s
APR 1.8.x, APR-util 1.7.x	7m 56s
Pool-debug	7m 3s
Shared MPMs (event), pool-debug, SSL/TLS variants	16m 55s
Shared MPMs (worker), pool-debug, SSL/TLS variants	14m 51s
Shared MPMs (prefork), pool-debug, SSL/TLS variants	13m 46s
litmus WebDAV tests	3m 30s
Regenerate ap_expr	4m 54s
APR 1.7.4, APR-util 1.6.3, LDAP	6m 16s
APR trunk thread debugging	4m 41s
UBSan	5m 35s
ASan	7m 54s
ASan, pool-debug	8m 25s
HTTP/2 test suite	15m 17s
MOD_TLS test suite	11s
	2h 50m 46s

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