Initialize EXTENDED_VERSION to a default

The EXTENDED_VERSION in the os-release file was an optional field.
Initialize it to a default since there will be a Redfish property for
extended version information that can be mapped to the ExtendedVersion
D-Bus property, choose the VERSION_ID value as the default since that's
what's used for the Version D-Bus property, and set it to a weak
variable so it can still be overwritten.

Need a new function to get the EXTENDED_VERSION from the os-release file
instead of just from a bitbake variable. It is still possible to
overwrite the default value in a conf or bbappend file, same as
BUILD_ID.

Note that the extended version was and still is surrounded by quotes,
since this is a free-format string that may contain spaces.

Tested:
- Verified the extended version string was the same as version in:
  - os-release:
VERSION_ID=2.13.0-dev-613-g1e16157845
EXTENDED_VERSION="2.13.0-dev-613-g1e16157845"

  - MANIFEST:
version=2.13.0-dev-613-g1e16157845
ExtendedVersion="2.13.0-dev-613-g1e16157845"

  - D-Bus properties:
.ExtendedVersion  property  s  "2.13.0-dev-613-g1e16157845"
.Version          property  s  "2.13.0-dev-613-g1e16157845"

- Verified that extended version could be set from a conf file, example:
in meta-ibm/conf/machine/witherspoon.conf:
EXTENDED_VERSION = "My Extended Version"

- Verified that extended version could be set from a bbappend, example:
in meta-ibm/recipes-core/os-release/os-release.bbappend:
EXTENDED_VERSION:witherspoon = "My_Extended_Version_from_bbappend"

Change-Id: I74adf08239c9cd08768be9c5d9cd3384e703da95
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>

0 files changed, 0 insertions, 0 deletions