支持value中的中文字符 (#170)

diff --git a/pkg/validate/instance.go b/pkg/validate/instance.go
index a85b6f3..1cebe73 100644
--- a/pkg/validate/instance.go
+++ b/pkg/validate/instance.go
@@ -7,6 +7,7 @@
 	commonNameRegexString = `^[a-zA-Z0-9]*$|^[a-zA-Z0-9][a-zA-Z0-9_\-.]*[a-zA-Z0-9]$`
 	getKeyRegexString     = `^[a-zA-Z0-9]*$|^[a-zA-Z0-9][a-zA-Z0-9_\-.]*[a-zA-Z0-9]$|^beginWith\([a-zA-Z0-9][a-zA-Z0-9_\-.]*\)$`
 	asciiRegexString      = `^[\x00-\x7F]*$`
+	allCharString         = `.*`
 )
 
 // custom validate rules
@@ -17,7 +18,7 @@
 	NewRule("commonName", commonNameRegexString, &Option{Min: 1, Max: 256}),
 	NewRule("valueType", `^$|^(ini|json|text|yaml|properties)$`, nil),
 	NewRule("kvStatus", `^$|^(enabled|disabled)$`, nil),
-	NewRule("value", asciiRegexString, &Option{Max: 2097152}), //ASCII, 2M
+	NewRule("value", allCharString, &Option{Max: 2097152}), //ASCII, 2M
 	NewRule("labelKV", commonNameRegexString, &Option{Max: 32}),
 	NewRule("check", asciiRegexString, &Option{Max: 1048576}), //ASCII, 1M
 }