removed progress bar from bosh_cli

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
Flat event formatting for event log rendering.

[#67322632]

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
Signed-off-by: Adam Stegman <astegman@pivotallabs.com>
Fixed task event interleaving edge cases

Signed-off-by: Adam Stegman <astegman@pivotallabs.com>