qa/distros: centos_8.yaml is now a symlink to centos_8.stream.yaml

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 0f4e51f05f9b340fe6128b46ea4601ecf01625d2)

Conflicts:
	qa/distros/all/centos_8.yaml was pointing at 8.2 instead of 8.3

diff --git a/qa/distros/all/centos_8.yaml b/qa/distros/all/centos_8.yaml
index 713f312fad518eb1d67f71feed158ff20149f760..8e7476153dcc532ea6777f23cf6a08e2e46ff176 120000 (symlink)
--- a/qa/distros/all/centos_8.yaml
+++ b/qa/distros/all/centos_8.yaml
@@ -1 +1 @@
-centos_8.2.yaml
\ No newline at end of file
+centos_8.stream.yaml
\ No newline at end of file