Add decode_jwt script, install kubeswitch on linux, unfreeze firefox version on linux, disable more bits of currentznver4 FreeBSD build, install terminfo-db, and remove build configs from old version of poudboot.

ansible/roles/base/tasks/common.yaml

@@ -47,6 +47,8 @@
       dest: /usr/local/bin/cleanup_temporary_files
     - src: git_fix_author.bash
       dest: /usr/local/bin/git_fix_author
+    - src: decode_jwt.bash
+      dest: /usr/local/bin/decode_jwt
 
 - import_tasks: tasks/freebsd.yaml
   when: 'os_flavor == "freebsd"'