Gregory Haynes 62efc03732 Clarify OVERWRITE_OLD_IMAGE docs
There has been some confusion about what this environment variable
controls, and it isnt very clear in the docs.

Change-Id: Id21b3c5ce361c4d1121eb7015020235b4c0a2f36
2016-08-15 12:15:22 -07:00
..
2016-03-13 16:24:59 +00:00
2016-05-02 01:29:17 -05:00
2016-05-02 01:29:17 -05:00