Do not clone extra Android repos by default

Change-Id: I755f377167464eca1f55c2a8f75b6267f6219f3d
11 jobs for morello/test-trigger in 281 minutes and 39 seconds (queued for 3 seconds)
Child pipeline (parent) latest
Status Job ID Name Coverage
  Test
passed #45817
arm64
test-android-binder

00:15:55

passed #45820
arm64
test-android-bionic-filter0

03:15:29

passed #45821
arm64
test-android-bionic-filter1

04:06:55

passed #45822
arm64
test-android-bionic-filter2

03:37:34

passed #45823
arm64
test-android-bionic-filter3

04:11:15

passed #45824
arm64
test-android-bionic-filter4

03:44:59

passed #45815
arm64
test-android-compartment

00:11:20

passed #45818
arm64
test-android-device-tree

00:11:16

passed #45816
arm64
test-android-dvfs

00:10:59

passed #45819
arm64
test-android-logd

01:26:37

passed #45814
arm64
test-android-multicore

00:10:39