[SPARK-31200][K8S] Enforce to use https in /etc/apt/sources.list

…n progress errors.

### What changes were proposed in this pull request?
Switching to `https` instead of `http` in the debian mirror urls.

### Why are the changes needed?
My ISP was trying to intercept (or trying to serve from cache) the `http` traffic and this was causing a very confusing errors while building the spark image. I thought by posting this, I can help someone save his time and energy, if he encounters the same issue.
```
bash-3.2$ bin/docker-image-tool.sh -r scrapcodes -t v3.1.0-f1cc86 build
Sending build context to Docker daemon  203.4MB
Step 1/18 : ARG java_image_tag=8-jre-slim
Step 2/18 : FROM openjdk:${java_image_tag}
 ---> 381b20190cf7
Step 3/18 : ARG spark_uid=185
 ---> Using cache
 ---> 65c06f86753c
Step 4/18 : RUN set -ex &&     apt-get update &&     ln -s /lib /lib64 &&     apt install -y bash tini libc6 libpam-modules krb5-user libnss3 procps &&     mkdir -p /opt/spark &&     mkdir -p /opt/spark/examples &&     mkdir -p /opt/spark/work-dir &&     touch /opt/spark/RELEASE &&     rm /bin/sh &&     ln -sv /bin/bash /bin/sh &&     echo "auth required pam_wheel.so use_uid" >> /etc/pam.d/su &&     chgrp root /etc/passwd && chmod ug+rw /etc/passwd &&     rm -rf /var/cache/apt/*
 ---> Running in 96bcbe927d35
+ apt-get update
Get:1 http://deb.debian.org/debian buster InRelease [122 kB]
Get:2 http://deb.debian.org/debian buster-updates InRelease [49.3 kB]
Get:3 http://deb.debian.org/debian buster/main amd64 Packages [7907 kB]
Err:3 http://deb.debian.org/debian buster/main amd64 Packages
  File has unexpected size (13217 != 7906744). Mirror sync in progress? [IP: 151.101.10.133 80]
  Hashes of expected file:
   - Filesize:7906744 [weak]
   - SHA256:80ed5d1cc1f31a568b77e4fadfd9e01fa4d65e951243fd2ce29eee14d4b532cc
   - MD5Sum:80b6d9c1b6630b2234161e42f4040ab3 [weak]
  Release file created at: Sat, 08 Feb 2020 10:57:10 +0000
Get:5 http://deb.debian.org/debian buster-updates/main amd64 Packages [7380 B]
Err:5 http://deb.debian.org/debian buster-updates/main amd64 Packages
  File has unexpected size (13233 != 7380). Mirror sync in progress? [IP: 151.101.10.133 80]
  Hashes of expected file:
   - Filesize:7380 [weak]
   - SHA256:6af9ea081b6a3da33cfaf76a81978517f65d38e45230089a5612e56f2b6b789d
  Release file created at: Fri, 20 Mar 2020 02:28:11 +0000
Get:4 http://security-cdn.debian.org/debian-security buster/updates InRelease [65.4 kB]
Get:6 http://security-cdn.debian.org/debian-security buster/updates/main amd64 Packages [183 kB]
Fetched 419 kB in 1s (327 kB/s)
Reading package lists...
E: Failed to fetch http://deb.debian.org/debian/dists/buster/main/binary-amd64/by-hash/SHA256/80ed5d1cc1f31a568b77e4fadfd9e01fa4d65e951243fd2ce29eee14d4b532cc  File has unexpected size (13217 != 7906744). Mirror sync in progress? [IP: 151.101.10.133 80]
   Hashes of expected file:
    - Filesize:7906744 [weak]
    - SHA256:80ed5d1cc1f31a568b77e4fadfd9e01fa4d65e951243fd2ce29eee14d4b532cc
    - MD5Sum:80b6d9c1b6630b2234161e42f4040ab3 [weak]
   Release file created at: Sat, 08 Feb 2020 10:57:10 +0000
E: Failed to fetch http://deb.debian.org/debian/dists/buster-updates/main/binary-amd64/by-hash/SHA256/6af9ea081b6a3da33cfaf76a81978517f65d38e45230089a5612e56f2b6b789d  File has unexpected size (13233 != 7380). Mirror sync in progress? [IP: 151.101.10.133 80]
   Hashes of expected file:
    - Filesize:7380 [weak]
    - SHA256:6af9ea081b6a3da33cfaf76a81978517f65d38e45230089a5612e56f2b6b789d
   Release file created at: Fri, 20 Mar 2020 02:28:11 +0000
E: Some index files failed to download. They have been ignored, or old ones used instead.
The command '/bin/sh -c set -ex &&     apt-get update &&     ln -s /lib /lib64 &&     apt install -y bash tini libc6 libpam-modules krb5-user libnss3 procps &&     mkdir -p /opt/spark &&     mkdir -p /opt/spark/examples &&     mkdir -p /opt/spark/work-dir &&     touch /opt/spark/RELEASE &&     rm /bin/sh &&     ln -sv /bin/bash /bin/sh &&     echo "auth required pam_wheel.so use_uid" >> /etc/pam.d/su &&     chgrp root /etc/passwd && chmod ug+rw /etc/passwd &&     rm -rf /var/cache/apt/*' returned a non-zero code: 100
Failed to build Spark JVM Docker image, please refer to Docker build output for details.
```
### Does this PR introduce any user-facing change?
No

### How was this patch tested?
Manually by switching to `https` mirrors on the offending ISP (I am already on).

Closes #27966 from ScrapCodes/docker-mirror.

Authored-by: Prashant Sharma <prashsh1@in.ibm.com>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

resource-managers/kubernetes/docker/src/main/dockerfiles/spark/Dockerfile

@@ -28,6 +28,7 @@ ARG spark_uid=185
 # docker build -t spark:latest -f kubernetes/dockerfiles/spark/Dockerfile .
 
 RUN set -ex && \
+    sed -i 's/http:/https:/g' /etc/apt/sources.list && \
     apt-get update && \
     ln -s /lib /lib64 && \
     apt install -y bash tini libc6 libpam-modules krb5-user libnss3 procps && \