Intergrate internal FAISS

ci/jenkins/internalJenkinsfile.groovy

@@ -18,7 +18,7 @@ pipeline {
     environment {
         PROJECT_NAME = "milvus"
         LOWER_BUILD_TYPE = params.BUILD_TYPE.toLowerCase()
-        SEMVER = BRANCH_NAME.substring(BRANCH_NAME.lastIndexOf("/") + 1)
+        SEMVER = BRANCH_NAME.contains("/") ? BRANCH_NAME.substring(BRANCH_NAME.lastIndexOf("/") + 1) : "${BRANCH_NAME}"
         PIPELINE_NAME = env.JOB_NAME.getAt(0..(env.JOB_NAME.indexOf("/") - 1))
     }