sfdx force:source:push is too verbose

[kvor]

Summary

When we push metadata sfdx force:source:push, the output lists all pushed files.
However, in C.I. where we clone our project, this is a major problem since we reach
file log limits and CI breaks. We expect either a summarised output (total number of files) in case of success or an argument (--quiet) that will return only warnings/errors

Steps To Reproduce:

1. run sfdx force:source:push
2. If 1000 files are pushed, the output will return 1000 lines.

Expected result

We expected a success message with total sum of files and not each one of them.
An argument --quiet --silent is need to control the verbosity of output.

Actual result

Returns thousands of lines of pushed metadata. This a problem in C.I. as many services like Travis have a limit in log file size.

Additional information

We would expect an argument --quiet where it would return only warnings and errors.