Use bazelisk for builds

Change-Id: I08c7765361de8bd56aed163387330a331d234feb
(cherry picked from commit dd94a3c8dd54dff268f7ce6613d61b0362c0c81d)

Jenkinsfile

diff --git a/Jenkinsfile b/Jenkinsfile
index c555bcf..376aded 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -22,7 +22,7 @@
                 gerritReview labels: [Verified: 0], message: "Build started: ${env.BUILD_URL}"
                 sh "git clone --recursive -b stable-3.0 https://gerrit.googlesource.com/gerrit"
                 sh 'cd gerrit/plugins && ln -sf ../../zookeeper . && ln -sf zookeeper/external_plugin_deps.bzl .'
-                sh 'cd gerrit && bazel build plugins/zookeeper && bazel test plugins/zookeeper:zookeeper_tests'
+                sh 'cd gerrit && bazelisk build plugins/zookeeper && bazelisk test plugins/zookeeper:zookeeper_tests'
             }
         }
     }