init: allow ':' in property names

Bug: 62114389
Test: boot bullhead, get/set properties with ':' via command line
Test: trigger an init trigger with a property containing a ':'
Change-Id: Ib51853a1ef9d4f79d510c8175c0d9684e2025e23
(cherry picked from commit 1369379e33e89f034bc7e94b28d5cd240a2fdefe)
1 file changed