HDDS-1668. Add liveness probe to the example k8s resources files

[elek]

In kubernetes resources we can define livebess probes which can help to detect any failure. If the define port is not available the pod will be rescheduled.

We need to add the liveness probes to our k8s resource files.

Note: We shouldn't add readiness probes. Readiness probe is about the service availability. The service/dns can be available only after the service is restarted. This is not good for us as:

• We need DNS resolution during the startup (See OzoneManager.loadOMHAConfigs)
• We already implemented retry in case of missing DNS entries

See: https://issues.apache.org/jira/browse/HDDS-1668

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	50	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
0	yamllint	0	yamllint was not available.
+1	@author	0	The patch does not contain any @author tags.
-1	test4tests	0	The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
		_ trunk Compile Tests _
+1	mvninstall	515	trunk passed
+1	compile	284	trunk passed
+1	mvnsite	0	trunk passed
+1	shadedclient	1654	branch has no errors when building and testing our client artifacts.
+1	javadoc	167	trunk passed
		_ Patch Compile Tests _
+1	mvninstall	467	the patch passed
+1	compile	294	the patch passed
+1	javac	294	the patch passed
+1	mvnsite	0	the patch passed
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedclient	744	patch has no errors when building and testing our client artifacts.
+1	javadoc	169	the patch passed
		_ Other Tests _
-1	unit	157	hadoop-hdds in the patch failed.
-1	unit	1247	hadoop-ozone in the patch failed.
+1	asflicense	51	The patch does not generate ASF License warnings.
		5205

Reason	Tests
Failed junit tests	hadoop.ozone.container.common.impl.TestHddsDispatcher
	hadoop.ozone.client.rpc.TestBCSID
	hadoop.ozone.client.rpc.TestOzoneRpcClientWithRatis
	hadoop.ozone.client.rpc.TestOzoneAtRestEncryption
	hadoop.ozone.client.rpc.TestSecureOzoneRpcClient
	hadoop.ozone.client.rpc.TestOzoneRpcClient

Subsystem	Report/Notes
Docker	Client=17.05.0-ce Server=17.05.0-ce base: https://builds.apache.org/job/hadoop-multibranch/job/PR-944/1/artifact/out/Dockerfile
GITHUB PR	#944
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient yamllint
uname	Linux 4fa34080de55 4.4.0-141-generic #167~14.04.1-Ubuntu SMP Mon Dec 10 13:20:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / b417a4c
Default Java	1.8.0_212
unit	https://builds.apache.org/job/hadoop-multibranch/job/PR-944/1/artifact/out/patch-unit-hadoop-hdds.txt
unit	https://builds.apache.org/job/hadoop-multibranch/job/PR-944/1/artifact/out/patch-unit-hadoop-ozone.txt
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-944/1/testReport/
Max. process+thread count	4471 (vs. ulimit of 5500)
modules	C: hadoop-ozone/dist U: hadoop-ozone/dist
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-944/1/console
versions	git=2.7.4 maven=3.3.9
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[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	79	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
0	yamllint	0	yamllint was not available.
0	shelldocs	1	Shelldocs was not available.
+1	@author	0	The patch does not contain any @author tags.
-1	test4tests	0	The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
		_ trunk Compile Tests _
+1	mvninstall	605	trunk passed
+1	compile	351	trunk passed
+1	mvnsite	0	trunk passed
+1	shadedclient	1065	branch has no errors when building and testing our client artifacts.
+1	javadoc	229	trunk passed
		_ Patch Compile Tests _
+1	mvninstall	564	the patch passed
+1	compile	339	the patch passed
+1	javac	339	the patch passed
+1	mvnsite	0	the patch passed
+1	shellcheck	0	There were no new shellcheck issues.
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedclient	872	patch has no errors when building and testing our client artifacts.
+1	javadoc	213	the patch passed
		_ Other Tests _
+1	unit	370	hadoop-hdds in the patch passed.
-1	unit	2930	hadoop-ozone in the patch failed.
+1	asflicense	65	The patch does not generate ASF License warnings.
		7949

Reason	Tests
Failed junit tests	hadoop.ozone.container.common.statemachine.commandhandler.TestBlockDeletion
	hadoop.hdds.scm.pipeline.TestNodeFailure
	hadoop.ozone.client.rpc.TestOzoneRpcClient
	hadoop.ozone.client.rpc.TestBCSID
	hadoop.hdds.scm.pipeline.TestPipelineClose
	hadoop.ozone.TestMiniOzoneCluster
	hadoop.ozone.client.rpc.TestCommitWatcher
	hadoop.hdds.scm.pipeline.TestRatisPipelineCreateAndDestory
	hadoop.ozone.client.rpc.TestReadRetries

Subsystem	Report/Notes
Docker	Client=18.09.5 Server=18.09.5 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-944/2/artifact/out/Dockerfile
GITHUB PR	#944
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient yamllint shellcheck shelldocs
uname	Linux b7588a8abeaa 4.15.0-52-generic #56-Ubuntu SMP Tue Jun 4 22:49:08 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / 2f4b37b
Default Java	1.8.0_212
unit	https://builds.apache.org/job/hadoop-multibranch/job/PR-944/2/artifact/out/patch-unit-hadoop-ozone.txt
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-944/2/testReport/
Max. process+thread count	3740 (vs. ulimit of 5500)
modules	C: hadoop-ozone/dist U: hadoop-ozone/dist
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-944/2/console
versions	git=2.7.4 maven=3.3.9 shellcheck=0.4.6
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