ADBM-3113: Fix for socket init at repo-push

[dkovalev1]

Command repo-push uses remote manifest, but to load it with S3 local socket
must be initialized first.

Socket is initialized in the call of sckInit() which is called when option --keep-alive is valid.
It can become valid if --keep-alive is available for the repo-push.
sck-keep-alive is a part of command buffer-size where all similar options are
listed.

This commit adds repo-push to the buffer-size.

The file src/config/parse.auto.c.inc is autogenerated and shall be updated as well.

ADBM-3113

[dkovalev1]

@dkovalev1 Please test it with S3 storage and publish the result to make sure that the problem is really resolved.

full integration tests were run with ADBM, details in the ADBM-3113