Only one config action has to be supported, currently multiple config actions are supported

[rsmekala]

Description of Issue/Question

Commands that have more than one config action specified should not be allowed.
Example: salt "vmx" junos.load salt://replace.conf replace=True update=True

The behavior is in sync with PyEZ that doesn't allow more than one config action value.
Link: https://github.com/Juniper/py-junos-eznc/blob/dabef6dc29af8017d5eb8ae4be70daa7a42b77d6/lib/jnpr/junos/utils/config.py#L384

I will raise a PR adding a check to salt.

[rsmekala]

Merged to 2019.2