Allow SshClient to be customized via NetconfClientConfiguration
There are a number of options we want to have configurable on
a per-client (rather than per-dispatcher) basis. These options
are related to how SSH operates and hence we do not want to
duplicate them but rather allow an explicit pre-built client
instance to be passed down.
JIRA: NETCONF-641
Change-Id: I4c39a8ec909edae0ca15e5af4efd7ca690d64fbf
Signed-off-by: Tibor Král <tibor.kral@pantheon.tech>
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>