scripts/bash-completion: Use default filename completion for ./configure

Signed-off-by: Michal Berger <michalx.berger@intel.com>
Change-Id: Ib95e9561299ceed3a37665da1decbfb9fce300dc
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10356
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>

scripts/bash-completion/spdk

@@ -268,3 +268,8 @@ _spdk_apps() {
 }
 
 _spdk_apps
+
+# Look for _configure(). If it exists, include default completions for path lookups
+if [[ $(type -t _configure) == function ]]; then
+	complete -o default -F _configure configure
+fi