tests: Disable rate limiting for tests parsing flow dumps from logs.

A few tests are parsing ovs-vswitchd.log for flow dump debug logs.
Those logs are rate limited and there is a chance required information
will not end up in the file, especially on large systems, since amount
of revalidator logs is proportional to the core count.

Fix that by disabling rate limiting for dpif module in such tests.

Fixes: c2a77f3 ("tests/ofproto-dpif: Use vlog to test dpif behaviour.")
Reported-at: openvswitch/ovs-issues#361
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

Author: igsilya

tests/dpif-netdev.at

@@ -230,6 +230,7 @@ m4_define([DPIF_NETDEV_MISS_FLOW_DUMP],
    AT_CHECK([ovs-appctl upcall/disable-ufid], [0], [Datapath dumping tersely using UFID disabled
 ], [])
    AT_CHECK([ovs-appctl vlog/set dpif:dbg dpif_netdev:dbg])
+   AT_CHECK([ovs-appctl vlog/disable-rate-limit dpif])
 
    AT_CHECK([ovs-ofctl add-flow br0 action=normal])
    AT_CHECK([ovs-appctl netdev-dummy/receive p1 'in_port(1),packet_type(ns=0,id=0),eth(src=50:54:00:00:00:09,dst=50:54:00:00:00:0a),eth_type(0x0800),ipv4(src=10.0.0.2,dst=10.0.0.1,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0)'])

tests/ofproto-dpif.at

@@ -9524,6 +9524,7 @@ AT_CHECK([ovs-appctl upcall/disable-ufid], [0], [Datapath dumping tersely using
 ], [])
 AT_CHECK([ovs-appctl time/stop])
 AT_CHECK([ovs-appctl vlog/set dpif:dbg dpif_netdev:dbg])
+AT_CHECK([ovs-appctl vlog/disable-rate-limit dpif])
 
 AT_CHECK([ovs-ofctl add-flow br0 actions=LOCAL,output:1,output:2])
 AT_CHECK([ovs-ofctl add-flow br1 actions=LOCAL,output:1,output:3])
@@ -10239,6 +10240,7 @@ m4_define([OFPROTO_DPIF_MEGAFLOW_DISABLED],
   [AT_SETUP([ofproto-dpif megaflow - disabled$1])
    OVS_VSWITCHD_START([], [], [], [m4_if([$1], [], [], [--dummy-numa="0,0,0,0,1,1,1,1"])])
    AT_CHECK([ovs-appctl vlog/set dpif:dbg dpif_netdev:dbg])
+   AT_CHECK([ovs-appctl vlog/disable-rate-limit dpif])
    func=`printf '%s_' "$1" | cut -c 4-`
    add_${func}of_ports br0 1 2
    AT_DATA([flows.txt], [dnl