Improve logging of commands and information about the OS in the SSH Job

Current Situation
At the moment the executed command of the SSH Job is only logged on DEBUG level. The Information about the OS shows isUnix=true/false.

Desired Behavior
The SSH Job should log the executed command on INFO level.
The logging of isUnix=true/false should be removed, instead the SSH Job will log the information as follwed:

• *** Checking for remote Operating System and shell! ***.
• *** Command uname was executed successfully, remote OS and shell are Unix like! ***