Bug: 27020: RBM build fails with runc version 1.0.1

runc version on Ubuntu 18.04 is 1.0.1 which is not currently handled in
rbm.conf, so the runc_spec100 flag does not get set properly.  This
patch changes it so the runc_spec100 flag is set if a spec string
greater than 1.0.0 is found.

rbm.conf

@@ -390,11 +390,11 @@ ENV:
         my ($out) = capture_exec('sudo', 'runc', '--version');
         return !($out =~ m/^runc version 0.1.1/);
       },
-      # runc_spec100 is true if runc spec is exactly 1.0.0
+      # runc_spec100 is true if runc spec is at least 1.0.0
       # We will need to update this when there is a new spec version available
       runc_spec100 => sub {
         my ($out) = capture_exec('sudo', 'runc', '--version');
-        return $out =~ m/^spec: 1\.0\.0$/m;
+        return $out =~ m/^.*spec: 1\.[0-9]+\.[0-9]+$/m;
       },
     },
   )