Validate & checksum downloaded artifacts

Author: hgeraldino

src/main/bash/sdkman-install.sh

@@ -178,8 +178,10 @@ function __sdkman_validate() {
 	__sdkman_echo_debug "Archive: ${archive}"
 
 	if [[ "${archive_type}" == 'zip' ]]; then
+		__sdkman_echo_debug "Checking zip archive"
 		is_ok=$(unzip -t "$archive" | grep 'No errors detected in compressed data')
 	elif [[ "${archive_type}" == 'tar' ]]; then
+		__sdkman_echo_debug "Checking tar archive"
 		is_ok=$(tar tf "$archive" | grep -v 'Error opening archive')
 	else
 		echo ""