Ilya Shipitsin reported that with some curl versions this reg test
may fail due to a wrong URI syntax with ::1 ipv6 local address in
this varnishtest script. This patch fixes this syntax issue and
replaces the iteration of "procees" commands by a "shell" command
to start curl processes (must be faster).
Thanks to Ilya Shipitsin for having reported this VTC file bug.
This commit completes the incomplete segmentation fault fix
in commit ac1f3ed64b58bd178865c6f2cc8f6f306d9e1e15.
Likewise it must be backported to haproxy 1.8.
Add reg-tests/README file about how to compile and use varnishtest, and
how to produce patches to add regression testing files to HAProxy sources.
Also update CONTRIBUTING file to encourage the contributors to write
regression testing files.
Add a makefile target 'reg-tests' to run all regression testing file
found in 'reg-tests' directory.
Add reg-tests/lua/h00000.vtc first regression testing file for a LUA
fixed by f874a83 commit.
