Jeff Sharkey e0ee5cefd6 Add "write" comment to content tool.
This gives developers an easy way to push temporary testing
configuration data into their apps.  We also now have symmetry with
the existing "read" command.

Test: builds, boots, example commands work
Bug: 64672411
Change-Id: I7bf6360915e1e4eb0d6ceaaec674f09931e28c6c
2018-01-01 12:29:58 -07:00
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