HBASE-23023 upgrade shellcheck used in dockerfile

[busbey]

because branches-1 use an older Ubuntu we need to include a work around for a bug in the linking of the shellcheck executable.

[Apache-HBase]

(!) A patch to the testing environment has been detected.
Re-executing against the patched versions to perform further tests.
The console is at https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-625/1/console in case of problems.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
💙	reexec	16m 53s	Docker mode activated.
		_ Prechecks _
💚	dupname	0m 0s	No case conflicting files found.
💙	hadolint	0m 0s	hadolint was not available.
💙	shelldocs	0m 0s	Shelldocs was not available.
💚	@author	0m 0s	The patch does not contain any @author tags.
		_ branch-1 Compile Tests _
💙	mvndep	5m 54s	Maven dependency ordering for branch
		_ Patch Compile Tests _
💙	mvndep	0m 11s	Maven dependency ordering for patch
💚	shellcheck	0m 0s	There were no new shellcheck issues.
💚	whitespace	0m 0s	The patch has no whitespace issues.
		_ Other Tests _
💙	asflicense	0m 0s	ASF License check generated no output?
		24m 6s

Subsystem	Report/Notes
Docker	Client=19.03.1 Server=19.03.1 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-625/1/artifact/out/Dockerfile
GITHUB PR	#625
Optional Tests	dupname asflicense hadolint shellcheck shelldocs
uname	Linux 6502b71b9d55 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:24 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	/home/jenkins/jenkins-slave/workspace/HBase-PreCommit-GitHub-PR_PR-625/out/precommit/personality/provided.sh
git revision	branch-1 / 99e7f60
Max. process+thread count	47 (vs. ulimit of 10000)
modules	C: U:
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-625/1/console
versions	git=1.9.1 maven=3.0.5 shellcheck=0.7.0
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