add tooling for MPL exceptions in copywrite bot

Makefile

@@ -438,6 +438,9 @@ codegen: codegen-tools ## Deep copy
 	@$(SHELL) $(CURDIR)/agent/consul/state/deep-copy.sh
 	@$(SHELL) $(CURDIR)/agent/config/deep-copy.sh
 	copywrite headers
+	# Special case for MPL headers in /api and /sdk
+	cd api && $(CURDIR)/build-support/scripts/copywrite-exceptions.sh
+	cd sdk && $(CURDIR)/build-support/scripts/copywrite-exceptions.sh
 
 print-%  : ; @echo $($*) ## utility to echo a makefile variable (i.e. 'make print-GOPATH')
 

api/.copywrite.hcl

@@ -0,0 +1,8 @@
+schema_version = 1
+
+project {
+  license		= "MPL-2.0"
+  copyright_year	= 2023
+
+  header_ignore		= []
+}

build-support/scripts/copywrite-exceptions.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# Used as a stopgap for copywrite bot in MPL-licensed subdirs, detects BUSL licensed
+# headers and deletes them, then runs the copywrite bot to utilize local subdir config
+# to inject correct headers.
+
+find . -type f -name '*.go' | while read line; do
+  if grep "SPDX-License-Identifier: BUSL-1.1" $line; then
+    sed -i '/SPDX-License-Identifier: BUSL-1.1/d' $line
+    sed -i '/Copyright (c) HashiCorp, Inc./d' $line
+  fi
+done
+
+copywrite headers

sdk/.copywrite.hcl

@@ -0,0 +1,8 @@
+schema_version = 1
+
+project {
+  license		= "MPL-2.0"
+  copyright_year	= 2023
+
+  header_ignore		= []
+}