* Add support for jumphost setting in junos_scp and junos_package
* Since junos_scp and junos_package module uses junos-eznc library
to transfer file and load package respectively to a remote device
it does not read the jumphost related configuration in netconf
connection plugin unlike other junos modules which uses the
Ansible persistent.
* Add `ssh_config` and `ssh_private_key_file` to add support to
read custom ssh config file and mention ssh private key file
for junos_scp and junos_package module
* Fix CI issue and update note section