coreos-base/misc-files: add back BCC tools

This file was not sourced because it does not have '.bash' or '.sh'
suffix.

Signed-off-by: Mathieu Tortuyaux <mtortuyaux@microsoft.com>

Author: tormath1

sdk_container/src/third_party/coreos-overlay/coreos-base/misc-files/files/bash/99-flatcar-bcc renamed to sdk_container/src/third_party/coreos-overlay/coreos-base/misc-files/files/bash/99-flatcar-bcc.bash

@@ -131,7 +131,7 @@ src_install() {
     done
 
     insinto '/etc/bash/bashrc.d'
-    doins "${FILESDIR}/bash/99-flatcar-bcc"
+    doins "${FILESDIR}/bash/99-flatcar-bcc.bash"
 
     insinto '/usr/share/flatcar'
     # The "oems" folder should contain a file "$OEMID" for each expected OEM sysext and