Fix dhcp-all-interfaces on Ubuntu/Debian.

We now call dhcp-all-interfaces with an argument, so it won't try and
configure all available interfaces.

Change-Id: I7dfb7d58ce3d1a92fb093099529e261c7e10e20c
Fix Grub configurations for Fedora images built on a UEFI host.

The grub install scripts on Fedora have hardcoded checks for
/sys/firmware/efi and if the directory exists, it uses efi
specific instruction like initrdefi, linuxefi etc. vm element
should fix it once the configuration is generated.

Closes-bug: #1231946
Change-Id: I888304cb9167b8e074b04ca6c5b2f9143b70d37d
Change refspec used to fetch all branches and tags

When the repository references are sha1s the fetch command used will
not work.  This will ensure that all of the objects are still fetched,
and all of the local cache references for branches and tags will be
updated rather than just the specified reference in use.

Change-Id: Iad2554b3087a5da37dac6e9f6a72432d49fce83d
Closes-Bug: #1301435
Disable splashimage for legacy grub.

There is a known issue in legacy grub. When using splashimage with
serial console, Legacy grub wont start properly. This commit is to
ensure that when serial console is used, legacy grub should not
contain splashimage. It also adds serial support to legacy grub
configuration file.

Change-Id: I2007916998dfe7c66ef51bf8c57c1698dc0fcb75
Document a little the concerns for operators.

Change-Id: I2429371d3c5d931d46674c4e46d99599fda9f42e
doc: indentation rules for element

This change defines indentation rules for the elements. It enforces
the use of 4 spaces which is already the devstack standard.

Change-Id: I072cf8bf6748d0c910fecffdf2282bcc4656d038
Add ability to add extra apt keys

Adds an environment variable DIB_ADD_APT_KEYS pointing to a folder of
apt repo GPG keys. Each key will be verified and installed with apt-key
to the apt keyring.

Change-Id: I4b15347a76aa3241e741931bb94f17598641ae42
apt-conf: uninitialised variables fix

In the bash script "99-override-default-apt-conf" 'set -u'
is being used to check for uninitialised variables.

This resulted in generic 'unbound variable' messages rather
than the intended error messages.

Tweaked the check for DIB_APT_CONF to work if the variable is unbound;
so that we get the intended error message rather than the `unbound
variable` message.

Change-Id: Ib8e287060f32312ab80dd7f44e2792ecca48edbb
Remove call to depmod in busybox

The version of depmod in busybox does not work if two versions of
the same kernel version are available, as search paths are not
honoured correctly.  However, we don't need to actually call
depmod as it's done during image building anyway.

Change-Id: Idd3cd5854e7c86e7ca1f2b0e50758d7db79ab6e7
Co-Author: matthew.gilliard@hp.com
Closes-bug: #1302856
Standardise manifest creation and retrieval

* Create a standard element to copy manifests out of the image and
  into the build area.
* Ensure all current manifests are copied into a standard manifests
  directory

Change-Id: I37eff5a13a14564e1adc33eb4f0144d571267617
Use provides to note an element provides an OS

Use "operating-system" to denote that an element provides that to the
image being created.  This can then be used to specify an abstract
dependency in other elements to assist in build-time image verification.

Change-Id: Ic125803da65e0f8f8c20ef90b08815f4f7d09762
Merge "Standardise manifest creation and retrieval"
Merge "Remove call to depmod in busybox"
Remove map-services from fedora element

This was supposed to have been moved to the redhat-common element,
and having it here too is both confusing and may break builds
depending on which version gets used.

Change-Id: Icae5cc633e9e49a9ee63bd9dfc94657c6795c6f1
map-services: add apache2 in the list

apache2 service is called httpd on Fedora and RHEL unlike SUSE,
Debian and Ubuntu.

Change-Id: I125c46bebb0342ee3bdb957116e7c7e8e27a2ecc
Add mapping for mariadb rdo package

Mariadb package in RDO repository is mariadb-galera-server, but
this name is mapped to MariaDB-Galera-server because of
mariadb installed from mariadb.org.

To avoid mapping conflicts mariadb-rdo uses virtual package name
mariadb-rdo-galera-server which is mapped to mariadb-galera-server.

Change-Id: Idf77d91876baeb81d89eb688808b892ece2bf19a
Merge "Fix dhcp-all-interfaces on Ubuntu/Debian."
Fix set -eu and pipefail failures

Fixes problems found by set -eu and pipefail, including:
-Many unset variables
-Commands that can fail under normal circumstances, which breaks
with set -e.  This change swallows those expected errors to allow
our existing error code to handle them.
-The dkms element was not finding Fedora kernel versions correctly.
This may be an issue for other distros too, but since Fedora was
working fine without this functionality I only changed it to print
a warning message rather than failing the build when it happens.
-The ramdisk init script will not be set -eu because if it fails
the result is a kernel panic, which can be tricky to debug.
However, in testing with set -e a few failing commands were found
and have been fixed in this patch.

Change-Id: I44cf98dfc80cfcaec54b88cc83be80a3dbf2cec3
Merge "Remove map-services from fedora element"
Merge "map-services: add apache2 in the list"