Update git submodules

Update git submodules

* Update docs/submodules/clover from branch 'master'
  - Merge "Modified validation script for tracing to support CI"
  - Modified validation script for tracing to support CI

    - Changed default Jaeger ports to 16686 for use with basic
    kubernetes port-forward and CI scripts
    - Added CLI to validate script to disable istio service check
    by default. This requires at least a single http request
    to istio-ingress after Jaeger deployment. It can be enabled
    with 'python validate.py -s'. Port and IP address for Jaeger
    can optionally be specified with '-ip' and '-port' options
    - Modified tracing doc to add k8s port-forward example in addition
    to k8s expose

    Change-Id: I10fb4d3cccfa50370d44ed7446f67a49c538bba9
    Signed-off-by: Eddie Arrage <eddie.arrage@huawei.com>