write-repo-file: add --gpgkey argument

Support "gpgkey = file://path/to/key"

compose_utils/repo_file.py

@@ -88,6 +88,8 @@ def emit(compose, opts, variant, output, content_type="repository"):
 
     content = REPO.format(name=name, enabled=enabled, baseurl=baseurl,
                           gpgcheck=int(opts.gpgcheck))
+    if opts.gpgkey:
+        content += "gpgkey = %s\n" % opts.gpgkey
     print(content, file=output)
 
 
@@ -166,6 +168,10 @@ def main(args=None):
         action="store_true",
         help="Enable gpgcheck = 1. Default is gpgcheck = 0.",
     )
+    parser.add_argument(
+        "--gpgkey",
+        help="gpgkey value (public key URL). Multiple key URLs should be comma-separated. Use --gpgcheck with this option.",
+    )
     opts = parser.parse_args(args)
 
     try:

tests/fixtures/gpgkey.repo

@@ -0,0 +1,14 @@
+[DP-1.0-Client-rpms]
+name = DP-1.0-Client-rpms
+baseurl = file:///composes/DP-1.0-20160315.t.0/compose/Client/$basearch/os
+enabled = 1
+gpgcheck = 1
+gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-DummyProduct
+
+[DP-1.0-Server-rpms]
+name = DP-1.0-Server-rpms
+baseurl = file:///composes/DP-1.0-20160315.t.0/compose/Server/$basearch/os
+enabled = 1
+gpgcheck = 1
+gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-DummyProduct
+

tests/test_repo_file.py

@@ -104,6 +104,12 @@ class TestRepoFile(unittest.TestCase):
     def test_gpgcheck(self):
         self.success_run(["--gpgcheck"], "DP-1.0-20160315.t.0", "gpgcheck.repo")
 
+    def test_gpgkey(self):
+        self.success_run(
+            ["--gpgcheck",
+             "--gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-DummyProduct"],
+            "DP-1.0-20160315.t.0", "gpgkey.repo")
+
     def test_is_url(self):
         self.assertTrue(repo_file.is_url('http://example.com/foobar'))
         self.assertTrue(repo_file.is_url('https://example.com/foobar'))