REGTESTS: ssl: skip generate-certificates test w/ wolfSSL

REGTESTS: ssl: skip generate-certificates test w/ wolfSSL

WolfSSL does not seem to work correctly with the generate-certificates
features. This patch disables it temporarly.

    ssl-max-ver TLSv1.2 seems to be a problem in the reg-test and
    wolfSSL but without it it's not able to generate correctly the cert:

    ***  h1    debug|00000004:clear-lst.accept(0007)=0028 from [127.0.0.1:35956] ALPN=<none>
    ***  h1    debug|00000004:clear-lst.clireq[0028:ffffffff]: GET / HTTP/1.1
    ***  h1    debug|00000004:clear-lst.clihdr[0028:ffffffff]: x-sni: unknown-sni.com
    ***  h1    debug|00000004:clear-lst.clihdr[0028:ffffffff]: host: 127.0.0.1
    ***  h1    debug|fd[0x29] OpenSSL error[0x13d] : need the private key
    ***  h1    debug|<134>Sep 20 15:42:58 haproxy[165743]: unix:1 [20/Sep/2023:15:42:58.042] ssl-lst/1: SSL handshake failure (need the private key)
    **** dT    1.072
    ***  h1    debug|fd[0x2a] OpenSSL error[0x13d] : need the private key
    ***  h1    debug|<134>Sep 20 15:42:59 haproxy[165743]: unix:1 [20/Sep/2023:15:42:59.044] ssl-lst/1: SSL handshake failure (need the private key)
    **** dT    2.075
    ***  h1    debug|fd[0x29] OpenSSL error[0x13d] : need the private key
    ***  h1    debug|<134>Sep 20 15:43:00 haproxy[165743]: unix:1 [20/Sep/2023:15:43:00.046] ssl-lst/1: SSL handshake failure (need the private key)
    **** dT    3.079
    ***  h1    debug|fd[0x29] OpenSSL error[0x13d] : need the private key
    ***  h1    debug|<134>Sep 20 15:43:01 haproxy[165743]: unix:1 [20/Sep/2023:15:43:01.050] ssl-lst/1: SSL handshake failure (need the private key)
    **** dT    3.080
    ***  h1    debug|00000004:default_backend.clicls[0028:0023]
    ***  h1    debug|00000004:default_backend.closed[0028:0023]
    ***  h1    debug|<134>Sep 20 15:43:01 haproxy[165743]: 127.0.0.1:35956 [20/Sep/2023:15:42:58.042] clear-lst default_backend/s1 0/0/-1/-1/+3009 503 +217 - - SC-- 3/1/0/0/3 0/0 "GET / HTTP/1.1" 0/-/-/-/0 -/-/-
    **** c3    rxhdr|HTTP/1.1 503 Service Unavailable\r
    **** c3    rxhdr|content-length: 107\r
    **** c3    rxhdr|cache-control: no-cache\r
    **** c3    rxhdr|content-type: text/html\r
    **** c3    rxhdr|\r