Change yq to snap

Change-Id: I462edbd5c7f0a6deb6c4baab0cb2ac0714aa4698
Signed-off-by: David Garcia <david.garcia@canonical.com>

installers/charmed_install.sh

@@ -303,18 +303,16 @@ function check_osm_deployed() {
 
 function create_overlay() {
     sudo snap install jq
-    sudo apt install python3-pip -y
-    python3 -m pip install yq
-    PATH=$PATH:$HOME/.local/bin  # make yq command available
+    sudo snap install yq
     local HOME=/home/$USER
-    local vca_user=$(cat $HOME/.local/share/juju/accounts.yaml | yq --arg CONTROLLER_NAME $CONTROLLER_NAME '.controllers[$CONTROLLER_NAME].user')
-    local vca_password=$(cat $HOME/.local/share/juju/accounts.yaml | yq --arg CONTROLLER_NAME $CONTROLLER_NAME '.controllers[$CONTROLLER_NAME].password')
-    local vca_host=$(cat $HOME/.local/share/juju/controllers.yaml | yq --arg CONTROLLER_NAME $CONTROLLER_NAME '.controllers[$CONTROLLER_NAME]["api-endpoints"][0]' --raw-output | cut -d ":" -f 1)
-    local vca_port=$(cat $HOME/.local/share/juju/controllers.yaml | yq --arg CONTROLLER_NAME $CONTROLLER_NAME '.controllers[$CONTROLLER_NAME]["api-endpoints"][0]' --raw-output | cut -d ":" -f 2)
+    local vca_user=$(cat $HOME/.local/share/juju/accounts.yaml | yq r - controllers.$CONTROLLER_NAME.user)
+    local vca_password=$(cat $HOME/.local/share/juju/accounts.yaml | yq r - controllers.$CONTROLLER_NAME.password)
+    local vca_host=$(cat $HOME/.local/share/juju/controllers.yaml | yq r - controllers.$CONTROLLER_NAME.api-endpoints[0] | cut -d ":" -f 1)
+    local vca_port=$(cat $HOME/.local/share/juju/controllers.yaml | yq r - controllers.$CONTROLLER_NAME.api-endpoints[0] | cut -d ":" -f 2)
     local vca_pubkey=\"$(cat $HOME/.local/share/juju/ssh/juju_id_rsa.pub)\"
     local vca_cloud="lxd-cloud"
     # Get the VCA Certificate
-    local vca_cacert=$(cat $HOME/.local/share/juju/controllers.yaml | yq --arg CONTROLLER_NAME $CONTROLLER_NAME '.controllers[$CONTROLLER_NAME]["ca-cert"]' --raw-output | base64 | tr -d \\n)
+    local vca_cacert=$(cat $HOME/.local/share/juju/controllers.yaml | yq r - controllers.$CONTROLLER_NAME.ca-cert | base64 | tr -d \\n)
 
     # Calculate the default route of this machine
     local DEFAULT_IF=`ip route list match 0.0.0.0 | awk '{print $5}'`