conformance-k8s-kind: disable kindnet, enable log dumping

While debugging a test failure, I noticed that this workflow missed
disabling the kindnet CNI (every other workflow already does this).

Separately, enable log dumping on failure, otherwise there isn't enough
to go on when tests fail.

Signed-off-by: Casey Callendrello <cdc@isovalent.com>

.github/workflows/conformance-k8s-kind.yaml

@@ -84,6 +84,7 @@ jobs:
           networking:
             ipFamily: ${IP_FAMILY}
             kubeProxyMode: "none"
+            disableDefaultCNI: true
           nodes:
           - role: control-plane
           - role: worker
@@ -216,7 +217,7 @@ jobs:
             --                                            \
             --kubeconfig=${PWD}/_artifacts/kubeconfig.conf     \
             --provider=local                              \
-            --dump-logs-on-failure=false                  \
+            --dump-logs-on-failure=true                   \
             --report-dir=${E2E_REPORT_DIR}                \
             --disable-log-dump=true