Backport HADOOP-16054 (Update Dockerfile to use Bionic) to branch-3.3

[aajisaka]

(cherry picked from commit 81d8b71)

JIRA: https://issues.apache.org/jira/browse/HADOOP-16054

[hadoop-yetus]

(!) A patch to the testing environment has been detected.
Re-executing against the patched versions to perform further tests.
The console is at https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2711/1/console in case of problems.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	22m 17s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
		_ branch-3.3 Compile Tests _
+0 🆗	mvndep	4m 6s	Maven dependency ordering for branch
+1 💚	shadedclient	19m 0s	branch has no errors when building and testing our client artifacts.
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 19s	Maven dependency ordering for patch
+1 💚	hadolint	0m 2s	There were no new hadolint issues.
+1 💚	shellcheck	0m 0s	There were no new shellcheck issues.
+1 💚	shelldocs	0m 16s	There were no new shelldocs issues.
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	shadedclient	15m 0s	patch has no errors when building and testing our client artifacts.
		_ Other Tests _
+1 💚	asflicense	0m 38s	The patch does not generate ASF License warnings.
		63m 34s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2711/1/artifact/out/Dockerfile
GITHUB PR	#2711
Optional Tests	dupname asflicense hadolint shellcheck shelldocs
uname	Linux a6d1207e9b7a 4.15.0-60-generic #67-Ubuntu SMP Thu Aug 22 16:55:30 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	branch-3.3 / 27f00c7
Max. process+thread count	606 (vs. ulimit of 5500)
modules	C: U:
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2711/1/console
versions	git=2.17.1 maven=3.6.0 shellcheck=0.4.6 hadolint=1.11.1-0-g0e692dd
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[aajisaka]

Looks good to me. Backported.