Merge pull request #2916 from walterlife/walterlife/1.8.0-patch-1

Prepare for 1.8.0 release

Author: xwm1992

gradle.properties

@@ -18,7 +18,7 @@
 jdk=1.8
 snapshot=false
 group=org.apache.eventmesh
-version=1.7.0-release
+version=1.8.0-release
 #last eight bits of public key
 signing.keyId=
 #passphrase for key pairs