compose.py: add osbuild plugin api client

A client that will create a compose request via the koji plugins.

compose.py

@@ -0,0 +1,56 @@
+#!/usr/bin/python3
+import argparse
+import koji
+import os
+
+from pprint import pprint
+
+
+def main():
+    parser = argparse.ArgumentParser(description="osbuild koji client")
+    parser.add_argument("--url", metavar="URL", type=str,
+                        default="https://localhost/kojihub",
+                        help="The URL koji hub API endpoint")
+    parser.add_argument("--repo", metavar="REPO", help='The repository to use',
+                        type=str, action="append", default=[])
+    parser.add_argument("--user", metavar="USER", default="kojiadmin")
+    parser.add_argument("--password", metavar="PASSWORD", default="kojipass")
+    parser.add_argument("--principal", metavar="USER", default="osbuild-krb@LOCAL")
+    parser.add_argument("--keytab", metavar="FILE", help="kerberos keytab",
+                        default="/tmp/osbuild-composer-koji-test/client.keytab")
+    parser.add_argument("--serverca", metavar="FILE", help="Server CA",
+                        default="/tmp/osbuild-composer-koji-test/ca-crt.pem")
+    parser.add_argument("--plain", help="use plain text login",
+                        default=False, action="store_true")
+    parser.add_argument("name", metavar="NAME", help='The distribution name')
+    parser.add_argument("version", metavar="VERSION", help='The distribution version')
+    parser.add_argument("target", metavar="TARGET", help='The build target')
+    parser.add_argument("arch", metavar="ARCHITECTURE", help='Request the architecture',
+                        type=str, nargs="+")
+    args = parser.parse_args()
+
+    opts = {"user": args.user, "password": args.password, "serverca": args.serverca}
+    session = koji.ClientSession(args.url, opts)
+    if args.plain:
+        session.login()
+    else:
+        session.gssapi_login(principal=args.principal, keytab=args.keytab)
+
+    name, version, arch, target = args.name, args.version, args.arch, args.target
+
+    opts = {}
+    if args.repo:
+        opts["repo"] = ",".join(args.repo)
+
+    print("name:", name)
+    print("version:", version)
+    print("arches:", ", ".join(arch))
+    print("target:", target)
+    if opts:
+        pprint(opts)
+
+    session.osbuildImageTest(name, version, arch, target, opts=opts)
+
+
+if __name__ == "__main__":
+    main()