Add support for overriding docker images

The clients tarball provides a set of default docker images
to be used. This commit adds support for users to change
those default images to other images from any registry.

Changes included in this commit:
- add the "-p" and "-a" parameters to the "configure_client.sh"
  script in order to override default platform and application
  image locations
- fixed README file to properly handle IPv6 address when
  configuring the authentication file  for helm
- forced host networking for client docker containers in order
  to better handle network connectivity to the remote setups
  we want to connect to

Change-Id: I9b88ad91ee873330a0fd62ec7eb6056dd544a758
Story: 2006711
Task: 39150
Signed-off-by: Stefan Dinescu <stefan.dinescu@windriver.com>

remote_cli/README

@@ -96,6 +96,11 @@ if [ -z "$OAM_IP" ]; then
     # AIO-SX doesn't use oam_floating_ip, but instead uses just oam_ip
     OAM_IP=$(system oam-show |grep oam_ip| awk '{print $4}')
 fi
+# If it's an IPv6 address we must enclose it in brackets
+if [[ $OAM_IP =~ .*:.* ]]; then
+    OAM_IP="[${OAM_IP}]"
+fi
+
 
 
 kubectl config --kubeconfig ${OUTPUT_FILE} set-cluster stxcluster --server=https://${OAM_IP}:6443 --insecure-skip-tls-verify

remote_cli/client_wrapper.sh

@@ -70,11 +70,11 @@ else
 fi
 
 if [[ "$FORCE_SHELL" == "true" ]]; then
-    exec ${SHELL_COMMAND} run --rm -ti ${COMMAND_ENV} ${VOLUME_LIST} --workdir /wd ${CLIENT_IMAGE_NAME} "$@"
+    exec ${SHELL_COMMAND} run --rm --network host -ti ${COMMAND_ENV} ${VOLUME_LIST} --workdir /wd ${CLIENT_IMAGE_NAME} "$@"
 elif [[ "$FORCE_NO_SHELL" == "true" ]]; then
-    exec ${SHELL_COMMAND} run --rm -t ${COMMAND_ENV} ${VOLUME_LIST} --workdir /wd ${CLIENT_IMAGE_NAME} "$@"
+    exec ${SHELL_COMMAND} run --rm --network host -t ${COMMAND_ENV} ${VOLUME_LIST} --workdir /wd ${CLIENT_IMAGE_NAME} "$@"
 elif [ -z "$2" ]; then
-    exec ${SHELL_COMMAND} run --rm -ti ${COMMAND_ENV} ${VOLUME_LIST} --workdir /wd ${CLIENT_IMAGE_NAME} "$@"
+    exec ${SHELL_COMMAND} run --rm --network host -ti ${COMMAND_ENV} ${VOLUME_LIST} --workdir /wd ${CLIENT_IMAGE_NAME} "$@"
 else
-    exec ${SHELL_COMMAND} run --rm -t ${COMMAND_ENV} ${VOLUME_LIST} --workdir /wd ${CLIENT_IMAGE_NAME} "$@"
+    exec ${SHELL_COMMAND} run --rm --network host -t ${COMMAND_ENV} ${VOLUME_LIST} --workdir /wd ${CLIENT_IMAGE_NAME} "$@"
 fi

remote_cli/configure_client.sh

@@ -15,6 +15,8 @@ TAG_FILE=docker_image_version.sh
 WORK_DIR='.'
 custom_conf_file=0
 explicit_client_type=0
+override_platform_image=0
+override_application_image=0
 
 # The script may be called from locations other
 # than its own folder, so build the full path to
@@ -39,9 +41,11 @@ usage(){
     echo "                  (default value is admin-openrc.sh)"
     echo "-k k8s_file       kubernetis config file"
     echo "                  (default value is temp-kubeconfig)"
+    echo "-p <image>        override platform docker image"
+    echo "-a <image>        override application docker image"
 }
 
-while getopts ":hr:w:o:t:k:" opt; do
+while getopts ":hr:w:o:t:k:p:a:" opt; do
     case $opt in
         h)
             usage
@@ -64,6 +68,14 @@ while getopts ":hr:w:o:t:k:" opt; do
         k)
             K8S_FILE=${OPTARG}
             ;;
+        p)
+            PLATFORM_IMAGE=${OPTARG}
+            override_platform_image=1
+            ;;
+        a)
+            APPLICATION_IMAGE=${OPTARG}
+            override_application_image=1
+            ;;
         *)
             echo "Invalid parameter provided"
             usage
@@ -136,3 +148,11 @@ fi
 
 echo "source ${PATH_TO_SCRIPT}/$ALIAS_FILE" >> $CONF_FILE
 echo "source ${PATH_TO_SCRIPT}/$TAG_FILE" >> $CONF_FILE
+
+if [[ $override_platform_image -eq 1 ]]; then
+    echo "export PLATFORM_DOCKER_IMAGE=\"${PLATFORM_IMAGE}\"" >> $CONF_FILE
+fi
+
+if [[ $override_application_image -eq 1 ]]; then
+    echo "export APPLICATION_DOCKER_IMAGE=\"${APPLICATION_IMAGE}\"" >> $CONF_FILE
+fi