vppctl: new bash completion for vppctl commands

Bash completion for vppctl
*vppctl_completion uses generated list vppctl-cmd-list to provide bash completion
*List of commands generated using grep, then moved by vpp packaging
*Once vpp package installed restart bash to use

Change-Id: I3b25e55a432c395af421231cf7c37c2e243fee61
Signed-off-by: Padraig Connolly <padraig.connolly@intel.com>
diff --git a/src/Makefile.am b/src/Makefile.am
index 18a41a1..227accc 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -28,6 +28,14 @@
 dist_bin_SCRIPTS =
 lib_LTLIBRARIES =
 BUILT_SOURCES =
+install-data-local:
+	@echo "Building vppctl command list..."
+	@DIR_SEARCH="$(srcdir)" ; \
+	DIR_EXCLUDE="examples" ; \
+	GREP_TIME=`time (grep -wIr "\.path = " $$DIR_SEARCH --exclude-dir=$$DIR_EXCLUDE \
+	| cut -d '"' -f2 | sort -u > $(srcdir)/scripts/vppctl-cmd-list) 2>&1` ; \
+	GREP_TIME=`echo $$GREP_TIME | awk '{print $$2}'` ; \
+	echo "Command list built, Time taken: $$GREP_TIME"
 
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 # DPDK