Update git submodules

Update git submodules

* Update docs/submodules/clover from branch 'stable/fraser'
  - Updated from global requirements

    Change-Id: I9539985b01d425e3e0350291a715a44e128c6075
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
  - Add clover initial docker image build script

    - install dependent deb/pip packages
    - install basic tools istioctl, kubectl
    - install clover source code
    - build/upload docker image script
    - update requirements.txt
    - update module import path

    - To use this image use need setup kube-config file.
        e.g. `docker run -v /root/config:/root/.kube/config -it clover bash`

    Change-Id: I91044bb99ce8e2b785ef03212d961a97b3d42233
    Signed-off-by: QiLiang <liangqi1@huawei.com>
    (cherry picked from commit c68b7b8380ea8d2ac4da6b4739c6b8e157bb952b)

  - Merge "Aligned snort-ids default config for SDC scenario" into stable/fraser
  - Merge "Added toplevel manifests for SDC sample scenario" into stable/fraser
  - Merge "Fix Nginx lb in k8s/istio" into stable/fraser
  - Add existing public redis pod/service

    - Use a community yaml for redis in k8s as simple data store
    - Redis can be used for tracing and also by the snort-ids
    to store alerts that can be processed by other services
    - If flannel is used, the redis CLI can be accessed on the
    host OS with redis-cli -h <flannel ip>
    - Within the k8s cluster, the redis service can be accessed with
    DNS using name 'redis'
    - The same yaml for redis is also included in toplevel manifest for SDC
    scenario. Included here if intention is to use separately (tracing
    only)

    Change-Id: Ibad283a4cc8938fe01f5de6b7743bdb5511be3af
    Signed-off-by: Eddie Arrage <eddie.arrage@huawei.com>
    (cherry picked from commit 66cc1be27b7fbb27c01a726663e42608eb411672)

  - Fix Nginx lb in k8s/istio

    - Provide workaround to make nginx lb work properly
    - nginx_client sample can modify default load balancing
    from three to two servers at runtime
    - Ensure port 9180 is used for default deploy for lb and
    servers
    - Modify render_yaml to specify deploy_name so that
    clover-server1, 2, 3 can be used for default lb config
    - Ensure proxy template is aligned to lb to allow the
    source IP from originating host to be propagated to final
    destination

    - Fix default nginx proxy server_name to 'proxy-access-control'
    and change default proxy destination to 'http-lb'
    - Split lb service_type to 'lbv1' and 'lbv2' to provide an example
    of how to modify the run-time configuration of the load balancer
    after deployment - modify http-lb-v2 to use clover-server4/5 instead
    of the defualt clover-server1/2/3 - modify http-lb-v1 to use
    clover-server1/2 instead of 1/2/3
    - Aligned pod IP retrival method with nginx_client.py

    Change-Id: I73fa60a69c93ae1e82a477ef6283c00f67a21360
    Signed-off-by: Eddie Arrage <eddie.arrage@huawei.com>
    (cherry picked from commit 5e213108dfade163a85cff9b9156de9bd2c18887)

  - Aligned snort-ids default config for SDC scenario

    - Modified snort-ids alert process to use k8s DNS name
    'proxy-access-control' to align with SDC scenario naming
    - Added default port 50054 to the manifest yaml template and
    rendering script for communication with proxy-access-control

    Change-Id: Ib04ee75e5d8ea9921b16b3b4469bed87b1cd2018
    Signed-off-by: Eddie Arrage <eddie.arrage@huawei.com>
    (cherry picked from commit 30d36864d491d41fcb4700b5363b68086e239e5a)

  - Added toplevel manifests for SDC sample scenario

    - Added missing k8s manifest yaml files for overall service delivery
    controller scenario - cannot be deployed coherently without this manifest
    - One file for private docker registry and one for opnfv
    public registry
    - Outlined in JIRA ticket CLOVER-16 and validated per
    description
    - Includes ingress rule, community redis pod/service and deployments
    for http-lb (v1/v2), snort-ids, proxy-access-controller,
    and clover-server1-5
    - All above pod/deployment naming matches default container
    configuration
    - Tested with istio manual injection

    Change-Id: Ia03782b38020d744ab00c99adbf4832d15bbd9f3
    Signed-off-by: Eddie Arrage <eddie.arrage@huawei.com>
    (cherry picked from commit 7381d8f19074c2d1bff6982d096d2c23c599172b)