update kubectl (#12018)

Author: danking

docker/Dockerfile.base

@@ -3,7 +3,7 @@ FROM {{ hail_ubuntu_image.image }}
 # source: https://cloud.google.com/storage/docs/gsutil_install#linux
 RUN curl --remote-name https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk-334.0.0-linux-x86_64.tar.gz && \
     tar -xf google-cloud-sdk-334.0.0-linux-x86_64.tar.gz && \
-    curl --remote-name https://dl.k8s.io/release/v1.19.7/bin/linux/amd64/kubectl && \
+    curl --remote-name https://dl.k8s.io/release/v1.21.14/bin/linux/amd64/kubectl && \
     install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
 ENV PATH $PATH:/google-cloud-sdk/bin
 

tls/Dockerfile

@@ -5,7 +5,7 @@ FROM {{ hail_ubuntu_image.image }}
 # jdk not strictly necessary, but we want keytool
 RUN curl -sSLO https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk-334.0.0-linux-x86_64.tar.gz && \
     tar -xf google-cloud-sdk-334.0.0-linux-x86_64.tar.gz && \
-    curl -sSLO https://dl.k8s.io/release/v1.19.7/bin/linux/amd64/kubectl && \
+    curl -sSLO https://dl.k8s.io/release/v1.21.14/bin/linux/amd64/kubectl && \
     install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl && \
     hail-apt-get-install openssl openjdk-8-jdk-headless && \
     sed -i 's/^RANDFILE/#RANDFILE/' /etc/ssl/openssl.cnf && \