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.

Rename the config vairable from DTF_OPENSTACK_ID to
DTF_OPENSTACK_DEFAULT_ID to better match the name with its
purpose.

* controller/bin/dtf-run-remote.in: Use DTF_OPENSTACK_DEFAULT_ID
instead of DTF_OPENSTACK_ID.
* controller/config/config.sh.template: Moved.
* controller/etc/dtf.conf.d/config.sh.template: Document renamed
variable on new place.

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.