Fix container tag file issue

Issue-ID: INF-248

Signed-off-by: Bin Yang <[email protected]>
Change-Id: Ieb302021cfba6a226558de1927e898027cff8408

diff --git a/stages/container-tag.yml b/stages/container-tag.yaml
similarity index 100%
rename from stages/container-tag.yml
rename to stages/container-tag.yaml