fix(mysql): adds missing headers to collection (#479)

* fix(cli): Add missing $(BUILD_DIR)/collector/mysql/sql/headers to make file.

Author: wpuziewicz

Makefile

@@ -128,9 +128,11 @@ build-collector: 										## Build the collector SQL scripts.
 	@mkdir -p $(BUILD_DIR)/collector/mysql/sql/
 	@mkdir -p $(BUILD_DIR)/collector/mysql/sql/5.7
 	@mkdir -p $(BUILD_DIR)/collector/mysql/sql/base
+	@mkdir -p $(BUILD_DIR)/collector/mysql/sql/headers
 	@cp scripts/collector/mysql/sql/*.sql $(BUILD_DIR)/collector/mysql/sql
 	@cp scripts/collector/mysql/sql/5.7/*.sql $(BUILD_DIR)/collector/mysql/sql/5.7
 	@cp scripts/collector/mysql/sql/base/*.sql $(BUILD_DIR)/collector/mysql/sql/base
+	@cp scripts/collector/mysql/sql/headers/*.header $(BUILD_DIR)/collector/mysql/sql/headers
 	@cp scripts/collector/mysql/collect-data.sh $(BUILD_DIR)/collector/mysql/
 	@cp -L scripts/collector/mysql/db-machine-specs.sh $(BUILD_DIR)/collector/mysql/
 	@cp scripts/collector/mysql/README.txt $(BUILD_DIR)/collector/mysql/