just test travis

.travis.yml

@@ -5,15 +5,16 @@ go:
   - "1.13.x"
   - "1.14.x"
 before_script:
+  - find /lib/modules/5.3.0-1029-gcp
   # make sure we keep path in tact when we sudo
   - sudo sed -i -e 's/^Defaults\tsecure_path.*$//' /etc/sudoers
   # modprobe ip_gre or else the first gre device can't be deleted
   - sudo modprobe ip_gre
   # modprobe nf_conntrack for the conntrack testing
   - sudo modprobe nf_conntrack
   - sudo modprobe nf_conntrack_netlink
-  - sudo modprobe nf_conntrack_ipv4
-  - sudo modprobe nf_conntrack_ipv6
+  - sudo modprobe nf_conntrack_ipv4 || true
+  - sudo modprobe nf_conntrack_ipv6 || true
   - sudo modprobe sch_hfsc
 install:
   - go get -v -t ./...