Always print output when refreshing cache

[thomas-bc]

Related Issue(s)	https://github.com/nasa/fprime/issues/1992

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Change Description

Fix https://github.com/nasa/fprime/issues/1992

When cmake_refresh_cache() is triggered, always print the cmake regeneration output.

Rationale

• This is consistent with the behavior that fprime-util build et al. have when target exists but requires a refresh (e.g. .fpp file was modified). Output of regeneration is printed out.
• Imo it helps new users (who may not be familiar with CMake) in understanding the build process. Target doesn't exist -> needs a refresh. Target is out of date -> needs a refresh. Refresh is the same thing happening under the hood in both cases (also fprime-util generate), and the familiar-looking output confirms that.
• Clears out any confusion with regards to https://github.com/nasa/fprime/issues/1992

Comment

This has the side effect of also printing the Built target noop to the screen... which I don't really like. I've been looking in other ways to do this, but was unsuccessful. A fix could be to go in the CMakeHandler._communicate and explicitly skip lines that equal Built target noop\n, but that sounds rather ugly... Do you have any suggestion?

[LeStarch]

We could rename the target to "refresh".