[SPARK-3709] Executors don't always report broadcast block removal properly back to the driver (for branch-1.1)

Author: Reynold Xin <rxin@apache.org>

Closes #2591 from rxin/SPARK-3709-1.1 and squashes the following commits:

ab99cc0 [Reynold Xin] [SPARK-3709] Executors don't always report broadcast block removal properly back to the driver
SPARK-3745 - fix check-license to properly download and check jar

for details, see: https://issues.apache.org/jira/browse/SPARK-3745

Author: shane knapp <incomplete@gmail.com>

Closes #2596 from shaneknapp/SPARK-3745 and squashes the following commits:

c95eea9 [shane knapp] SPARK-3745 - fix check-license to properly download and check jar

(cherry picked from commit a01a30927d107a8d9496f749eb9d89eda6dda9d7)
Signed-off-by: Josh Rosen <joshrosen@apache.org>

Conflicts:
	dev/check-license
[SPARK-3747] TaskResultGetter could incorrectly abort a stage if it cannot get result for a specific task

Author: Reynold Xin <rxin@apache.org>

Closes #2599 from rxin/SPARK-3747 and squashes the following commits:

a74c04d [Reynold Xin] Added a line of comment explaining NonFatal
0e8d44c [Reynold Xin] [SPARK-3747] TaskResultGetter could incorrectly abort a stage if it cannot get result for a specific task

(cherry picked from commit eb43043f411b87b7b412ee31e858246bd93fdd04)
Signed-off-by: Reynold Xin <rxin@apache.org>