[PATCH v2] isar-bootstrap: Clear local apt state information

[vijaikumar.kanagarajan@gmail.com]

From: Vijai Kumar K <Vijaikumar_Kanagarajan@mentor.com>

Debootstrap's second stage switches to using the default debian mirror.
But the apt state information is renamed and used from the first stage.
This might cause apt-get update to fail with the below error when the
sources list contain both custom and upstream repos.

| Reading package lists...
| E: Failed to fetch http://deb.debian.org/debian/dists/stretch/InRelease \
|	Unable to find expected entry 'contrib/source/Sources' in Release file \
|		(Wrong sources.list entry or malformed file)

Clear the apt state information before apt-get update.

Signed-off-by: Vijai Kumar K <Vijaikumar_Kanagarajan@mentor.com>
---
Changes in v2:
  - Addressed review comments from Henning.

 meta/recipes-core/isar-bootstrap/isar-bootstrap.inc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc b/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc
index d614d9a..9096775 100644
--- a/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc
+++ b/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc
@@ -280,6 +280,7 @@ isar_bootstrap() {
             install -v -m644 "${APTSRCS_INIT}" \
                                  "${ROOTFSDIR}/etc/apt/sources-list"
             rm -f "${ROOTFSDIR}/etc/apt/sources.list"
+            rm -rf "${ROOTFSDIR}/var/lib/apt/lists/"*
             mkdir -p "${ROOTFSDIR}/etc/apt/apt.conf.d"
             install -v -m644 "${WORKDIR}/isar-apt.conf" \
                              "${ROOTFSDIR}/etc/apt/apt.conf.d/50isar.conf"
-- 
2.17.1