Allow adding packages to debootstrap

Also allows setting the "distro name" so that things that change the
debootstrap signature will have a different tarball.

This is being done in advance of a debian-upstart element to allow
experimenting with debian and upstart.

Change-Id: I1a558fdaf5924c65f1cced9f9bf29d73643c30af
Add debian-upstart for experimenting with upstart

Upstart support in Debian is somewhat experimental, but having it would
be especially useful for TripleO which already generates upstart scripts
which will work fairly well on Debian based systems.

Change-Id: I267da5ae7bc4a484fac152a14963d96ca2ad2693
Symlink correct element install type

The source-repositories element will now symlink the install scripts
corresponding to the set install type for an element into the install.d
directory.

Different install types are implemented by elements by writing scripts to do
the install type under install.d/<element-name>-<install-type>-install
directories.

For example, the nova element would provide:

nova/install.d/nova-package-install/74-nova
nova/install.d/nova-source-install/74-nova

source-repositories will create the following symlink for the package
install type:

$TMP_HOOKS_PATH/install.d/74-nova -> nova-package-install/74-nova

Or, for the source install type:

$TMP_HOOKS_PATH/install.d/74-nova -> nova-source-install/74-nova

Change-Id: I1bfaf39e5a98b2af904fbc6d674dbada30b27ed9
Merge "Symlink correct element install type"
Fix the curl command in the ironic-deploy element

We need to use the eval command together with curl so that the
$TOKEN_HEADER variable is seems by curl as two arguments: "-H" and
"'X-Auth-Token: ...". Without the eval bash would interpret the variable
as only one argument "-H 'X-Auth-Token: ...'" making the curl command
to not understand that parameter and fail to pass the auth_token to the
Ironic API.

Change-Id: I4dcfc323d6ab9b7fa207328386ef65a146a93617
Convert -dev to -devel in fedora/map-packages

If there is not a special case in package_map then
convert all *-dev packages into *-devel

Change-Id: I411935c1f3221016b56263ac9502221cd75d130d
Update to Fedora 20

Update the default version of Fedora to 20 for the cloud image. A few of
us have run through devtest using Fedora 20 and it's working.

To continue to use 19, just specify DIB_RELEASE=19 for your image
builds.

Change-Id: I3d48272dedcd424747db5485ae0d8e9953f04191
Allow use of mirrors when building Ubuntu images

Add a script to ubuntu's pre-install.d that will change
archive.ubuntu.com to a mirror specified in $DIB_DISTRIBUTION_MIRROR.

Change-Id: Idfd5a40ec8a1912a5de5dcdcaf9795946b0b53b8
Merge "Allow use of mirrors when building Ubuntu images"
fedora/RHEL: use env from /usr/bin

/usr/bin/env is the new canonical location of "env", use
it.

Change-Id: Ifc5fbd942d409b1f54057579c5f57ccac63d4b72
Fix mysql package mappings for opensuse

Change-Id: I231df61a79e6c8686afbbd203fa6bba96497f228
Merge "fedora/RHEL: use env from /usr/bin"
Merge "Fix the curl command in the ironic-deploy element"
Merge "Convert -dev to -devel in fedora/map-packages"
Merge "Allow adding packages to debootstrap"
Merge "Fix mysql package mappings for opensuse"
Merge "Add debian-upstart for experimenting with upstart"
Merge "Update to Fedora 20"
Create a new baremetal element

Rather than using a script to mount the image using nbd to extract the
kernel and ramdisk, make a new element called baremetal, which contains
a cleanup.d script that will copy them out to <image name>.{vmlinuz,initrd}.

Closes-Bug: 1224669
Change-Id: I8f3569aa12148d18b1c8242b6fbbd8857894b26f
Update default RHEL guest image

Red Hat periodically updates the qcow2 guest image available
for download. This sets the default image name to the latest.

Change-Id: Iba3075bbee3b41918d5cd3da9721fcbf98ff3bcd