HBASE-23857 Add 2.1.9 to download page

[Apache9]

No description provided.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 19s	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.
		_ master Compile Tests _
+1 💚	mvninstall	6m 3s	master passed
+1 💚	mvnsite	17m 41s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	5m 36s	the patch passed
+1 💚	mvnsite	17m 22s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	xml	0m 1s	The patch has no ill-formed XML file.
		_ Other Tests _
+1 💚	asflicense	0m 19s	The patch does not generate ASF License warnings.
		49m 35s

Subsystem	Report/Notes
Docker	Client=19.03.6 Server=19.03.6 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1177/1/artifact/out/Dockerfile
GITHUB PR	#1177
Optional Tests	dupname asflicense mvnsite xml
uname	Linux ab737a8f5b5e 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 08:06:28 UTC 2019 x86_64 GNU/Linux
Build tool	maven
Personality	/home/jenkins/jenkins-slave/workspace/Base-PreCommit-GitHub-PR_PR-1177/out/precommit/personality/provided.sh
git revision	master / e11dbf3
Max. process+thread count	86 (vs. ulimit of 10000)
modules	C: . U: .
Console output	https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1177/1/console
versions	git=2.11.0 maven=2018-06-17T18:33:14Z)
Powered by	Apache Yetus 0.11.1 https://yetus.apache.org

This message was automatically generated.