[fuel-main] /etc/fuel_build_id should be created during iso build without any conditions

[Sergey Kulanov]

We use file /etc/fuel_build_id as the flag for pre-provisioned master node (CentOS) during master node bootstrapping, eg.:

1)
 # Disable online base MOS repo if we run an ISO installation
[ -f /etc/fuel_build_id ] && yum-config-manager --disable mos${FUEL_RELEASE}* --save

2)
if [ ! -f /etc/fuel_build_id ]; then
sed -i "s|127.0.0.1:8080/ubuntu/x86_64|mirror.fuel-infra.org/mos-repos/ubuntu/${FUEL_RELEASE}|g" "${ASTUTE_YAML}"
ln -s ${wwwdir}/${OPENSTACK_VERSION}/ubuntu ${wwwdir}/ubuntu

This logic always works, because building with jenkins we have defined BUILD_ID variable:

ifdef BUILD_ID
$(BUILD_DIR)/iso/isoroot.done: $(ISOROOT)/fuel_build_id
$(ISOROOT)/fuel_build_id:
 echo "$(BUILD_ID)" > $@
endif

In case if we are building ISO without jenkins or variable BUILD_ID is not defined we are "switching" to online repo usage (preprovisioned master node deployment), which is wrong.

We must always create file fuel_build_id during ISO build

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/312874

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/312874
Committed: https://git.openstack.org/cgit/openstack/fuel-main/commit/?id=656137de077d3b4c68d34d795ca30d66dd3a5709
Submitter: Jenkins
Branch: master

commit 656137de077d3b4c68d34d795ca30d66dd3a5709
Author: Sergey Kulanov <email address hidden>
Date: Thu May 5 12:23:18 2016 +0300

    Always create /etc/fuel_build_id flag

    We need always create /etc/fuel_build_id flag-file since
    it's used for preprovisioned master node detection. The absence
    of this file means that we are on clean CentOS and should use
    online repos.

    Change-Id: If614549621374cf4714f08152c914b85a448b534
    Closes-bug: #1578548

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/313000

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/313000
Committed: https://git.openstack.org/cgit/openstack/fuel-main/commit/?id=d66dab3291d492e90c2955575df6ba5f43075c5d
Submitter: Jenkins
Branch: stable/mitaka

commit d66dab3291d492e90c2955575df6ba5f43075c5d
Author: Sergey Kulanov <email address hidden>
Date: Thu May 5 12:23:18 2016 +0300

    Always create /etc/fuel_build_id flag

    We need always create /etc/fuel_build_id flag-file since
    it's used for preprovisioned master node detection. The absence
    of this file means that we are on clean CentOS and should use
    online repos.

    Change-Id: If614549621374cf4714f08152c914b85a448b534
    Closes-bug: #1578548
    (cherry picked from commit 656137de077d3b4c68d34d795ca30d66dd3a5709)