dist/ci: rework spec.sh as obs-build-target using osc build.

Instead of performing a slim rpm build and check directly inside the
container a proper build is performed using `osc build`. The target
package is checked out the _service file pointed at the local copy
and then `osc service disabledrun` before building.

dist/ci/osc-credentials

@@ -0,0 +1,13 @@
+#!/usr/bin/python
+
+try:
+    from osc import conf
+except:
+    import sys
+    sys.exit()
+
+apiurl = conf.config['apiurl']
+cp = conf.get_configParser()
+
+for key in ('user', 'pass', 'email'):
+    print('{}="{}"'.format(key, cp.get(apiurl, key, raw=True)))