envsetup: dopush: Update regex to match remaining build time

QPR2 introduced remaining build time in the progress box [0]
but it was broken with tee cmd so dopush() was worked fine.
Now, QPR3 fixed that issue so dopush() is broken.

Example:
[ 99% 394/395 1m30s remaining] Copy: out/target/product/devon/apex/art_boot_images/javalib/arm/boot.art
[100% 395/395 1m30s remaining] Install: out/target/product/devon/system/framework/framework.jar

Change-Id: Ifdfcfe0f750d39f4e3fe7d669e5094729d75e224