koji: move run-koji-containers.sh to tools

Also install it is part of he tests subpackage. This a helper-tool, not
golang code, so should not live in `internal`. We need access to this
from the integration tests, so install it onto the tests system.

Signed-off-by: Tom Gundersen <teg@jklm.no>

.github/workflows/tests.yml

@@ -84,10 +84,10 @@ jobs:
 
       - name: Run unit tests
         run: |
-          sudo internal/upload/koji/run-koji-container.sh start
+          sudo tools/run-koji-container.sh start
           koji --server=http://localhost:8080/kojihub --user kojiadmin --password kojipass --authtype=password make-task image
           env KRB5_CONFIG=../../../.github/krb5.conf go test -v -race -covermode atomic -coverprofile=coverage.txt -tags koji_test ./internal/upload/koji
-          sudo internal/upload/koji/run-koji-container.sh stop
+          sudo tools/run-koji-container.sh stop
 
       - name: Send coverage to codecov.io
         run: bash <(curl -s https://codecov.io/bash)