implement rpc timeout

[apurvaraghu]

fix issue #607

[n3wtype]

I just investigated this issue. It seems that timeout behaviour of commit_confirmed got broken with this commit: 0cdae0e .

It introduced timeout param for commit_confirmed with default value of 30.

However, the only place where commit_configuration is called is

ansible-junos-stdlib/ansible_collections/juniper/device/plugins/modules/config.py

Line 1229 in 9e39e00

junos_module.commit_configuration(ignore_warning=ignore_warning,

and timeout parameter is not passed here, so default value is always used.

I think more proper solution would be to pass "timeout" parameter to this call if it was passed to module.