Add optional --release parameter to subcloud-backup restore so that the
user can specify which loaded image to use during the installation
process triggered by --with-install.
This parameter can only be used if --with-install is also specified.
Test plan:
PASS: Verify that the subcloud is restored with installation of
current active release when specified.
PASS: Verify that the subcloud is restored with installation of
previous inactive release when specified.
PASS: Verify that the subcloud is restored with installation of
current active release if the "--release" parameter is omitted.
Story: 2010611
Task: 47709
Signed-off-by: Victor Romano <victor.gluzromano@windriver.com>
Change-Id: I619a1bf50c221fe6fc8cdfa87724d18393aef9cb