Initial support for a centos7 image.
This is separate to rhel7 because the major differences are things
like repo and image locations, which are always going to be different.
We should merge any real changes into the redhat-common layers.
Apart from the added support files in centos7/*, the other change is
mostly modifications to redhat-common's extract-image to handle
different partition layouts of the centos7 image.
Change-Id: I943abe5ff0a803f36eda266a79af0d9220edcae7
The current "redhat" os family omits RHEL7. The rhel7 element has the
corresponding $DISTRO_NAME set in environment.d. This patch adds rhel7
so a pkg-map json file using "redhat" for the os family will work the
same as rhel, centos and fedora.
Change-Id: If6b4cbba618167669a499e6121f234942ca9367a
This patch removes a couple of lines of redundant code. In Python,
the get method on a dictionary defaults the return value to None,
so the method never raises a key error.
https://docs.python.org/2/library/stdtypes.html#typesmapping
Change-Id: I180877f9be23d373cd63771bb3682d6587ec6fac
Adds a new pkg-map element which can be used to install
packages based on an in element 'pkg-map' JSON config
file format.
As part of this change we expose DIB's IMAGE_ELEMENT variable
so that we can have access to the element names which are being
installed in a clean manner.
This change is intended to decouple elements from DIB
and allow new elements to support multiple distributions
(with various package naming schemes) without having to
constantly maintain DIB's various bin/map-packages files.
Change-Id: Ic0a061995e2ae708c95a535cba6237bff58f7d93
