test/run: allow filter on distro

This way we can test the distros on their respective CI, as not
all distros can be built in all environment. In particular RHEL
needs to be on a subscribed host.

Signed-off-by: Tom Gundersen <teg@jklm.no>

test/cases/tar_local_boot.json

@@ -4,6 +4,7 @@
   },
   "compose": {
     "output-format": "tar",
+    "distro": "fedora-30",
     "filename": "root.tar.xz",
     "blueprint-draft": {
       "name": "tar-boot-test",

test/cases/vhd_local_boot.json

@@ -3,6 +3,7 @@
     "type": "qemu"
   },
   "compose": {
+    "distro": "fedora-30",
     "output-format": "vhd",
     "filename": "image.vhd",
     "blueprint-draft": {

test/cases/vmdk_local_boot.json

@@ -3,6 +3,7 @@
     "type": "qemu"
   },
   "compose": {
+    "distro": "fedora-30",
     "output-format": "vmdk",
     "filename": "disk.vmdk",
     "blueprint-draft": {

test/run

@@ -227,6 +227,7 @@ def run_test(case, private_key, store):
 def main():
     parser = argparse.ArgumentParser(description='Run test cases.')
     parser.add_argument('--cases', type=str, nargs='*', help='Limit tests to given cases.')
+    parser.add_argument('--distros', type=str, nargs='*', help='Limit tests to given distros.')
     arg = parser.parse_args()
 
     failed = False
@@ -237,6 +238,10 @@ def main():
             with open(filename) as f:
                 case = json.load(f)
 
+            if arg.distros:
+                if case["compose"]["distro"] not in arg.distros:
+                    continue
+
             print(f"RUNNING: {filename}")
             if run_test(case, private_key, store):
                 print(f"SUCCESS")