Refactor get_tails() to add create_vm() compatibility

quickget

@@ -1118,19 +1118,14 @@ function get_solus() {
 
 function get_tails() {
     local ISO=""
+    local JSON=""
     local HASH=""
-    local RELEASE_JSON_URL=""
-    local RELEASE_JSON=""
     local URL=""
 
-    RELEASE_JSON_URL="https://tails.boum.org/install/v2/Tails/amd64/${RELEASE}/latest.json"
-    RELEASE_JSON="$(wget -q -O- "${RELEASE_JSON_URL}")"
-    URL=$(echo "${RELEASE_JSON}" | jq -r '.installations[0]."installation-paths"[]|select(.type=="iso")|."target-files"[0].url')
-    HASH=$(echo "${RELEASE_JSON}" | jq -r '.installations[0]."installation-paths"[]|select(.type=="iso")|."target-files"[0].sha256')
-    ISO="${URL##*/}"
-    web_get "${URL}" "${VM_PATH}"
-    check_hash "${ISO}" "${HASH}"
-    make_vm_config "${ISO}"
+    JSON="$(wget -q -O- "https://tails.boum.org/install/v2/Tails/amd64/${RELEASE}/latest.json")"
+    URL=$(echo "${JSON}" | jq -r '.installations[0]."installation-paths"[]|select(.type=="iso")|."target-files"[0].url')
+    HASH=$(echo "${JSON}" | jq -r '.installations[0]."installation-paths"[]|select(.type=="iso")|."target-files"[0].sha256')
+    echo "${URL} ${HASH}"
 }
 
 function get_ubuntu() {