This is a V1 of overlayfs-etc image feature implementation, that allows
to setup the whole /etc under overlayfs. Please review and merge if you
find it OK

The following changes since commit 0d15632f3db787d3f08eb260732567e62f52ffb3:

libtasn1: upgrade 4.17.0 -> 4.18.0 (2021-11-16 22:19:47 +0000)

are available in the Git repository at:

git://github.com/UVV-gh/openembedded-core feature/overlayfs-etc
https://github.com/UVV-gh/openembedded-core/tree/feature/overlayfs-etc

Vyacheslav Yurkov (6):
overlayfs-etc: mount etc as overlayfs
wic: image for overlayfs-etc tests
image: add overlayfs-etc image feature
oeqa/selftest: overlayfs helper function
oeqa/selftest: unit tests for overlayfs-etc
overlayfs: update notes on /etc

meta-selftest/wic/overlayfs_etc.wks.in | 4 +
meta/classes/image.bbclass | 3 +-
meta/classes/overlayfs-etc.bbclass | 93 ++++++++++++
meta/classes/overlayfs.bbclass | 1 +
meta/lib/oeqa/selftest/cases/overlayfs.py | 173 ++++++++++++++++++++--
5 files changed, 257 insertions(+), 17 deletions(-)
create mode 100644 meta-selftest/wic/overlayfs_etc.wks.in
create mode 100644 meta/classes/overlayfs-etc.bbclass