New script 'dtf-return-machine' returns the VM to OpenStack based
on its public IP.  In future, this may be abstracted to any VM
provider (or VM pool or whatever), but that requires also some
IP <=> VM mapping shared between dtf-get-machine and
dtf-return-machine.

* controller/.gitignore: Ignore new scripts.
* controller/Makefile.am: Build new scripts.
* controller/bin/dtf-return-machine.in: New script for VM
* deletion.
* controller/libexec/dtf-nova.in: New wrapper around 'nova'
command, showing only data output where fields are separated by
tabulator.
* controller/share/dtf-controller/ansible/playbooks/fedora.yml:
Finally call dtf-return-machine after successful test run.

Controller is able to read simple YAML configuration file with
list of task to be performed in parallel (the task actually are
run the testsuite remotely, commit results to DB, count
statistics and upload results).

* controller/bin/dtf-controller.in: New template for binary.
* controller/libexec/dtf-commit-results.in: Copy whole result
directory instead of 'dtf' subdir only.
* controller/.gitignore: Ignore new binary.
* controller/Makefile.am: Build dtf-commit-results.

I had badly configured git so I missed those before.

* controller/.gitignore: Add autoconf/automake related ignores.

Move 'results_stats' and 'commit_results' binaries into libexec
and adjust appropriately.  Also html template is now in
$pkgdatadir.

* .gitignore: Add tags/ChangeLog generated files.
* README: Just some random notes.  Needs to be rewritten anyway.
* controller/.gitignore: Add newly 'make'd files.
* controller/Makefile.am: Generate libexec/bin files.
* controller/commit_results: Move to controller/libexec as
dtf-result-stats.in.
* controller/configure.ac: Also substitute resulttemplatedir.
* controller/etc/dtf.conf.d/config.sh.template: The DTF_DATABASE
was misleading - use rather DTF_DATABASE_DEFAULT.
* controller/libexec/dtf-commit-results.in: Moved from
controller/commit_results.
* controller/result_stats: Moved to
controller/libexec/dtf-result-stats.in.
* controller/libexec/dtf-result-stats.in: Moved from
controller/result_stats.
* controller/result_templates/html.tmpl: Moved to
controller/share/dtf-controller/results-stats-templates/html.tmpl.

First part of converting controller to autoconf/automake solution.

* .gitignore: New gitignore; autotools ignores.
* Makefile.am: New file.
* get_machine: Renamed to template bin/dtf-get-machine.in.
* bin/dtf-get-machine.in: New template based on get_machine.
* run_remote: Renamed to template bin/dtf-run-remote.in.
* bin/dtf-run-remote.in: New binary template from run_remote.
* build: New bootstrap like helper script (git-only).
* configure.ac: New file.
* etc/dtf.sh.in: Likewise.
* ansible_helpers/wait-for-ssh: Renamed to
libexec/dtf-wait-for-ssh.
* share/dtf-controller/parse_credsfile: Reworked script for
parsing OS credentials.
* parse_credsfile: Moved to share/dtf-controller.
* libexec/dtf-wait-for-ssh: Renamed from wait-for-ssh.
* ansible/*: Moved into share/dtf-controller/ansible/*.
* share/dtf-controller/ansible/vars/generated-vars.yml.in: New
template file exporting configure-time variables into playbooks.