Add TruncateCollection API to Java SDK#1781

sre-ci-robot merged 1 commit intomilvus-io:2.6milvus-io/milvus-sdk-java:2.6from

sijie-ni-0214:feat/truncate-collection-2.6sijie-ni-0214/milvus-sdk-java:feat/truncate-collection-2.6Copy head branch name to clipboard