DTIN-3193: Install ca-certificates in runtime_base image

[jmakar-s1]

Install ca-certificates in runtime_base image to populate /etc/ssl/certs, this resolves issue #1199

Before

$ docker run -it scalyr/scalyr-k8s-agent:2.2.4 ls /etc/ssl/certs
ls: cannot access '/etc/ssl/certs': No such file or directory

After

$ docker run -it test4scalyr/scalyr-k8s-agent:dtin-3193 ls /etc/ssl/certs/*.pem | wc -l
141
$ docker run -it test4scalyr/scalyr-k8s-agent:dtin-3193 python3 -c 'import urllib.request; print(urllib.request.urlopen("https://google.de").status)'
200

[github-actions[bot]]

Test Results

     19 files   -   1       19 suites   - 1   26m 23s :stopwatch: - 6m 11s 1 427 tests  - 21  1 402 :heavy_check_mark:  - 21    25 :zzz: ±0  0 :x: ±0  6 898 runs   - 21  6 668 :heavy_check_mark:  - 21  230 :zzz: ±0  0 :x: ±0 

Results for commit ef09f431. ± Comparison against base commit 596cab27.

This pull request removes 21 tests.

``` tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python2 tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python2_host tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python2_ssl tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python2_ssl_bad_cafile tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python2_ssl_bad_hostname tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python3 tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python3_host tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python3_ssl tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python3_ssl_bad_cafile tests.smoke_tests.monitors_test.mysql_test ‑ test_mysql_python3_ssl_bad_hostname … ```

:recycle: This comment has been updated with latest results.

[codecov[bot]]

Codecov Report

Merging #1214 (8733530) into master (596cab2) will decrease coverage by 25.97%. The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #1214       +/-   ##
===========================================
- Coverage   81.41%   55.44%   -25.97%     
===========================================
  Files         174       51      -123     
  Lines       42053    18272    -23781     
  Branches     4699     3238     -1461     
===========================================
- Hits        34234    10130    -24104     
- Misses       6604     6961      +357     
+ Partials     1215     1181       -34     

see 167 files with indirect coverage changes