Add llvm role

roles/llvm/tasks/Ubuntu-18.04.yaml

@@ -19,7 +19,15 @@
   set_fact:
     lib_dir: '{{release.name | lower | regex_replace(" (\d+)\.\d+\.\d+", "-\1")}}'
 
-# - name: download release archive
+- name: create temporary directory for download
-#   get_url:
+  tempfile:
-#     url: '{{asset.browser_download_url}}'
+    state: directory
-#     dest: 
+  register: tempdir
+
+- set_fact:
+    download_path: '{{tempdir.path}}/llvm.tar.xz'
+
+- name: download release archive
+  get_url:
+    url: '{{asset.browser_download_url}}'
+    dest: '{{download_path}}'