[ovs-git] [openvswitch/ovs] e99c53: travis: Enable OvS Travis CI for arm

[Ilya Maximets]

  Branch: refs/heads/master
  Home:   https://github.com/openvswitch/ovs
  Commit: e99c53ee6167a3b12426ea1d9f913713dd80810b
      https://github.com/openvswitch/ovs/commit/e99c53ee6167a3b12426ea1d9f913713dd80810b
  Author: Lance Yang <Lance.Yang at arm.com>
  Date:   2020-03-25 (Wed, 25 Mar 2020)

  Changed paths:
    M .travis.yml
    M .travis/linux-build.sh

  Log Message:
  -----------
  travis: Enable OvS Travis CI for arm

Enable part of travis jobs with gcc compiler for arm64 architecture

1. Add arm jobs into the matrix in .travis.yml configuration file
2. To enable OVS-DPDK jobs, set the build target according to
different CPU architectures
3. Temporarily disable sparse checker because of static code checking
failure on arm64

Considering the balance of the CI coverage and running time, some kernel
and DPDK jobs are removed from Arm CI.

Successful travis build jobs report:
https://travis-ci.org/github/yzyuestc/ovs/builds/666129448

Reviewed-by: Yanqin Wei <Yanqin.Wei at arm.com>
Reviewed-by: Ruifeng Wang <Ruifeng.Wang at arm.com>
Reviewed-by: JingZhao Ni <JingZhao.Ni at arm.com>
Reviewed-by: Gavin Hu <Gavin.Hu at arm.com>
Signed-off-by: Lance Yang <Lance.Yang at arm.com>
Signed-off-by: Ilya Maximets <i.maximets at ovn.org>