tests: make distros/all/centos.yaml be a symlink to centos_7.3

Before this commit, tests that used distros/all/centos.yaml would
fail on VPS because VPS defaults to centos 7.0 when os_version is not
specified.

Signed-off-by: Nathan Cutler <ncutler@suse.com>

diff --git a/qa/distros/all/centos.yaml b/qa/distros/all/centos.yaml
deleted file mode 100644 (file)
index 8f4854b95ac89b475161af0bffce267d4dfba4c5..0000000000000000000000000000000000000000
--- a/qa/distros/all/centos.yaml
+++ /dev/null
@@ -1 +0,0 @@
-os_type: centos

diff --git a/qa/distros/all/centos.yaml b/qa/distros/all/centos.yaml
new file mode 120000 (symlink)
index 0000000000000000000000000000000000000000..6ae4874530d4deb3185e2ab6a8946efcaa4444c4
--- /dev/null
+++ b/qa/distros/all/centos.yaml
@@ -0,0 +1 @@
+centos_7.3.yaml
\ No newline at end of file