[Bug] Directories requireing write access need to be configurable.

[dwoz]

Directories requiring write access by the minion process need to be configurable. Specifically the salt user's home directory and the extras-3.10 (extras-3.14) directory.

We might need to expand on this for the implementation:

• RPM: /etc/sysconfig/salt-minion-setup — sourced by pkg/rpm/salt.spec (lines 477, 629, 810). Pre-create this file with SALT_USER=... etc. and rpm will pick it up at install time.
• DEB: there's no equivalent file. pkg/debian/salt-master.preinst:17 (and the other preinst scripts) only honor environment variables — SALT_USER, SALT_GROUP, SALT_HOME, SALT_NAME. So you have to export SALT_USER=foo before apt install, or pre-set them in the shell

Version: 3006.24

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