Make X-Subject-Token search case unsensitive

USER_TOKEN variable is empty because the grep expression
is not ignoring case and certs are not created.

Change-Id: I175cb2d4c64d5f7024b13ce11c1184029f63c317
Task: 26189
Story: 2003671

magnum/drivers/common/templates/kubernetes/fragments/make-cert-client.sh

@@ -68,7 +68,7 @@ EOF
     content_type='Content-Type: application/json'
     url="$AUTH_URL/auth/tokens"
     USER_TOKEN=`curl $VERIFY_CA -s -i -X POST -H "$content_type" -d "$auth_json" $url \
-        | grep X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
+        | grep -i X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
 
     # Get CA certificate for this cluster
     curl $VERIFY_CA -X GET \

magnum/drivers/common/templates/kubernetes/fragments/make-cert.sh

@@ -106,7 +106,7 @@ EOF
     content_type='Content-Type: application/json'
     url="$AUTH_URL/auth/tokens"
     USER_TOKEN=`curl $VERIFY_CA -s -i -X POST -H "$content_type" -d "$auth_json" $url \
-        | grep X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
+        | grep -i X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
 
     # Get CA certificate for this cluster
     curl $VERIFY_CA -X GET \