Do not clone extra Android repos by default

Change-Id: I755f377167464eca1f55c2a8f75b6267f6219f3d
9 jobs for morello/test-trigger in 131 minutes and 36 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build Stage1
passed #39929
triggered
build-firmware

00:04:02

passed #39928
triggered
build-toolchain

01:51:45

 
  Build Stage2
failed #39930
triggered
build-android

00:14:29

passed #39931
triggered
build-busybox

00:08:47

 
  Generate Test
skipped #39932
triggered
generate-test
 
  Test
skipped test
passed #39934
arm64 triggered
test-busybox

00:04:56

 
  Report To Trigger
passed #39936
triggered
report_failure

00:00:24

skipped #39935
triggered
report_success
 
Name Stage Failure
failed
build-android Build Stage2
real	14m0.227s
user 9m59.304s
sys 1m40.372s
Uploading artifacts for failed job
Uploading artifacts...
WARNING: build.env: no matching files
ERROR: No files to upload
Cleaning up file based variables
ERROR: Job failed: exit code 1