fix equals and hashcode issue by seagle-yuan · Pull Request #1856

fix equals and hashcode issue by seagle-yuan · Pull Request #1856 · apache/hugegraph

fix equals and hashcode issue

com.baidu.hugegraph.auth.RolePermission.java
com.baidu.hugegraph.backend.cache.RamCache.java
com.baidu.hugegraph.backend.serializer.BinaryBackendEntry.java
com.baidu.hugegraph.backend.serializer.TextBackendEntry.java
com.baidu.hugegraph.structure.HugeEdgeProperty.java
com.baidu.hugegraph.traversal.optimize.HugeCountStep.java
com.baidu.hugegraph.traversal.optimize.HugeGraphStep.java
com.baidu.hugegraph.traversal.optimize.HugeVertexStep.java