tests: Do not generate pcap file by default

pcap file is generated by the processes writing to the sockets,
which is not allowed for privilege-separated process in new
OpenSSH servers (confined by seccomp filter).

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

tests/torture.c

@@ -815,6 +815,7 @@ void torture_setup_socket_dir(void **state)
     struct torture_state *s;
     const char *p;
     size_t len;
+    char *env = getenv("TORTURE_GENERATE_PCAP");
 
     s = malloc(sizeof(struct torture_state));
     assert_non_null(s);
@@ -851,7 +852,9 @@ void torture_setup_socket_dir(void **state)
 
     setenv("SOCKET_WRAPPER_DIR", p, 1);
     setenv("SOCKET_WRAPPER_DEFAULT_IFACE", "170", 1);
-    setenv("SOCKET_WRAPPER_PCAP_FILE", s->pcap_file, 1);
+    if (env != NULL && env[0] == '1') {
+        setenv("SOCKET_WRAPPER_PCAP_FILE", s->pcap_file, 1);
+    }
 
     *state = s;
 }