rename as per requirements.

Change-Id: I57cc1a74ba76b437fc2c0f24c64c932c0ffc95c8
Signed-off-by: Narinder Gupta <narinder.gupta@canonical.com>

diff --git a/ci/kubernetes/fetch-charm.sh b/ci/kubernetes/fetch-charms.sh
similarity index 100%
rename from ci/kubernetes/fetch-charm.sh
rename to ci/kubernetes/fetch-charms.sh