upgrade gradle to 7.0 and fix test bug. (#327)

* bugfix build.gradle tar task

* merge

* upgrade to gradle 7.0

* bugfix gradle task spotbugs

* bugfix eventmesh-connector-rocketmq testImplementation

* upgrade to gradle7.0

* refactor runtime module test and spotbugs error

* bugfix sign task

Co-authored-by: jonyang(杨军) <jonyang@webank.com>
Co-authored-by: jonyangx <jonyang1120@gmail.com>

.travis.yml

@@ -5,10 +5,10 @@ jdk:
   - oraclejdk8
 
 script:
-  - travis_retry gradle check
+  - travis_retry ./gradlew clean build
 
-after_success:
-  - gradle clean test jacocoAllTestReport coveralls
+#after_success:
+#  - ./gradlew clean
 
 env:
   global: