Try to stabilize m0.vtc on arm vtester

from the log:

**   top   === shell -exit 1 -expect {failing as requested} {
**** top   shell_cmd|exec 2>&1 ;
**** top   shell_cmd|\tvarnishadm -n /root/VT/_vtest_tmp/vtc.37277.0dc3c11b/v1 vcl.load f1 /root/VT/_vtest_tmp/vtc.37277.0dc3c11b/f1
**** dT    27.789
**** v1    vsl|          0 CLI             - Rd vcl.load f1 vcl_f1.1686893821.277415/vgc.so 1auto
**** v1    vsl|          0 CLI             - Wr 300 62 VCL "f1" Failed initialization
Message:
	failing as requested

**** dT    27.893
**** v1    vsl|          0 CLI             - Rd ping
**** v1    vsl|          0 CLI             - Wr 200 19 PONG 1686893826 1.0
**** dT    32.987
**** top   shell_out|CLI communication error (hdr)
**** top   shell_status = 0x0002
---- top   shell_exit not as expected: got 0x0002 wanted 0x0001
*    top   RESETTING after ../../../../bin/varnishtest/tests/m00000.vtc
**** dT    32.988

bin/varnishtest/tests/m00000.vtc

@@ -187,7 +187,7 @@ shell {
 varnish v1 -clierr 300 "vcl.load f1 ${tmpdir}/f1"
 
 shell -exit 1 -expect {failing as requested} {
-	varnishadm -n ${tmpdir}/v1 vcl.load f1 ${tmpdir}/f1
+	varnishadm -t 10 -n ${tmpdir}/v1 vcl.load f1 ${tmpdir}/f1
 }
 
 varnish v1 -cliok "param.set vcc_feature +allow_inline_c"