Implements RShell Connector

[Roman Sakno]

RShell Connector may be used in the following cases:

1. Monitor managed resource that didn't have appropriate SNAMP connector
2. Monitor private clouds

RShell Connector uses SSH and Telnet protocols using for connection to the managed resources. Also, it is used tool profiles that represents special description of command-line tool used to execute commands on the managed resource and parse output in the type-safe manner.

[Roman Sakno]

Telnet is not implemented in the current version because there is no suitable Java implementation for this protocol.