plugins/cli: initial version of the cli plugin

Re-uses code from compose.py. Needs to be installed into
  /usr/lib/python3.$/site-packages/koji_cli_plugins
Yes indeed.

plugins/cli/osbuild.py

@@ -0,0 +1,63 @@
+"""osbild koji command line client integration"""
+import argparse
+import koji_cli.lib as kl
+from koji.plugin import export_cli
+from koji_cli.lib import _
+
+
+def parse_args(argv):
+    parser = argparse.ArgumentParser(description="osbuild koji client")
+    parser.add_argument("--repo", metavar="REPO", help='The repository to use',
+                        type=str, action="append", default=[])
+    parser.add_argument("--release", metavar="RELEASE", help='The distribution release')
+    parser.add_argument("name", metavar="NAME", help='The distribution name')
+    parser.add_argument("version", metavar="VERSION", help='The distribution version')
+    parser.add_argument("distro", metavar="DISTRO", help='The distribution')
+    parser.add_argument("target", metavar="TARGET", help='The build target')
+    parser.add_argument("arch", metavar="ARCH", help='Request the architecture',
+                        type=str, nargs="+")
+    parser.add_argument("--image-type", metavar="TYPE",
+                        help='Request an image-type [default: qcow2]',
+                        type=str, action="append", default=[])
+    args = parser.parse_args(argv)
+    return args
+
+
+@export_cli
+def handle_osbuild_image(options, session, argv):
+    "[build] Build images via osbuild"
+    args = parse_args(argv)
+
+    name, version, arch, target = args.name, args.version, args.arch, args.target
+    distro, image_types = args.distro, args.image_type
+
+    if not image_types:
+        image_types = ["qcow2"]
+
+    opts = {}
+
+    if args.release:
+        opts["release"] = args.release
+
+    if args.repo:
+        opts["repo"] = ",".join(args.repo)
+
+    print("name:", name)
+    print("version:", version)
+    print("distro:", distro)
+    print("arches:", ", ".join(arch))
+    print("target:", target)
+    print("image types ", str(image_types))
+
+    kl.activate_session(session, options)
+
+    task_id = session.osbuildImage(name, version, distro, image_types, target, arch, opts=opts)
+
+    print("Created task: %s" % task_id)
+    print("Task info: %s/taskinfo?taskID=%s" % (options.weburl, task_id))
+
+    res = kl.watch_tasks(session, [task_id], quiet=False)
+
+    if res == 0:
+        result = session.getTaskResult(task_id)
+        print(result)