Added success message for Command Output

[cpats007]

• Added success message before new line for successful migrations
• updated unit tests

Q	A
Type	improvement
BC Break	no
Fixed issues	none

Summary

When executing a successful migration, the only output from the command when not using verbosity levels is a blank new line. When running from something like ansible, it's sometimes nice to see an output. This PR adds a single line output to denote a successful migration to version XXX

Examples:

Previously you would need to run the migration twice to ensure that the update was successful:

This is how it will look on first run with the new change:

[SenseException]

Failed BC check looks unrelated.

[greg0ire]

Thanks @cpats007 !

[cpats007]

Thanks @cpats007 !

No problem, thanks for merging :)

[ToshY]

As pedantic as this may sound, a colon is never preceded by a white space in the English language.

[greg0ire]

At the risk of sounding even more pedantic, you should never use bold if you intend the text you write to be read linearly.

[ToshY]

At the risk of sounding even more pedantic, you should never use bold if you intend the text you write to be read linearly.

Duly noted.

Back to the issue at hand: space preceding a colon. I assume there are no objections to fixing it then.

[greg0ire]

No objections. If you want to send a PR, you might want to run grep -rn -F ' :' to look for other violations.