Adjust collect-info playbook

Cleanup collected artifacts,
drop unrelated files/commands.
Always install gitinfos script to binaries for external
use.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

roles/kubernetes/preinstall/tasks/main.yml

@@ -1,4 +1,10 @@
 ---
+- name: 'GIT | Install script for collecting git info'
+  template:
+    src: "{{ role_path }}/gen-gitinfos.sh"
+    dest: "{{ bin_dir }}/gen-gitinfos.sh"
+    mode: a+rwx
+
 - include: gitinfos.yml
   when: run_gitinfos