HDDS-1915. Remove hadoop script from ozone distribution

[elek]

/bin/hadoop script is included in the ozone distribution even if we a dedicated /bin/ozone

[~arp] reported that it can be confusing, for example "hadoop classpath" returns with a bad classpath (ozone classpath ) should be used instead.

To avoid such confusions I suggest to remove the hadoop script from distribution as ozone script already provides all the functionalities.

It also helps as to reduce the dependencies between hadoop 3.2-SNAPSHOT and ozone as we use the snapshot hadoop script as of now.

See: https://issues.apache.org/jira/browse/HDDS-1915

[hadoop-yetus]

🎊 +1 overall

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+1	@author	0	The patch does not contain any @author tags.
		_ trunk Compile Tests _
+1	shadedclient	869	branch has no errors when building and testing our client artifacts.
		_ Patch Compile Tests _
+1	shellcheck	0	There were no new shellcheck issues.
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedclient	749	patch has no errors when building and testing our client artifacts.
		_ Other Tests _
+1	asflicense	30	The patch does not generate ASF License warnings.
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Subsystem	Report/Notes
Docker	Client=19.03.1 Server=19.03.1 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-1233/1/artifact/out/Dockerfile
GITHUB PR	#1233
Optional Tests	dupname asflicense shellcheck shelldocs
uname	Linux a59d552d7e6e 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	personality/hadoop.sh
git revision	trunk / 1127215
Max. process+thread count	307 (vs. ulimit of 5500)
modules	C: hadoop-ozone/dist U: hadoop-ozone/dist
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-1233/1/console
versions	git=2.7.4 maven=3.3.9 shellcheck=0.4.6
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[bharatviswa504]

+1 LGTM.
Ya with this, we can eliminate trunk version of hadoop and hadoop.cmd script.

[bharatviswa504]

@arp7 can you also take a look at this change.
I will wait for a day for others to review if no more comments I will commit it.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	77	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
0	shelldocs	0	Shelldocs was not available.
+1	@author	0	The patch does not contain any @author tags.
		_ trunk Compile Tests _
+1	shadedclient	849	branch has no errors when building and testing our client artifacts.
		_ Patch Compile Tests _
+1	shellcheck	0	There were no new shellcheck issues.
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedclient	751	patch has no errors when building and testing our client artifacts.
		_ Other Tests _
+1	asflicense	32	The patch does not generate ASF License warnings.
		1822

Subsystem	Report/Notes
Docker	Client=18.09.7 Server=18.09.7 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-1233/2/artifact/out/Dockerfile
GITHUB PR	#1233
Optional Tests	dupname asflicense shellcheck shelldocs
uname	Linux ba42f1de95fb 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 / 3cc0ace
Max. process+thread count	334 (vs. ulimit of 5500)
modules	C: hadoop-ozone/dist U: hadoop-ozone/dist
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-1233/2/console
versions	git=2.7.4 maven=3.3.9 shellcheck=0.4.6
Powered by	Apache Yetus 0.10.0 http://yetus.apache.org

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[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	41	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
0	shelldocs	0	Shelldocs was not available.
+1	@author	0	The patch does not contain any @author tags.
		_ trunk Compile Tests _
+1	shadedclient	730	branch has no errors when building and testing our client artifacts.
		_ Patch Compile Tests _
+1	shellcheck	0	There were no new shellcheck issues.
+1	whitespace	0	The patch has no whitespace issues.
+1	shadedclient	636	patch has no errors when building and testing our client artifacts.
		_ Other Tests _
+1	asflicense	28	The patch does not generate ASF License warnings.
		1541

Subsystem	Report/Notes
Docker	Client=19.03.1 Server=19.03.1 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-1233/3/artifact/out/Dockerfile
GITHUB PR	#1233
Optional Tests	dupname asflicense shellcheck shelldocs
uname	Linux ea291fcd5650 4.4.0-157-generic #185-Ubuntu SMP Tue Jul 23 09:17:01 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / 00b5a27
Max. process+thread count	422 (vs. ulimit of 5500)
modules	C: hadoop-ozone/dist U: hadoop-ozone/dist
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-1233/3/console
versions	git=2.7.4 maven=3.3.9 shellcheck=0.4.6
Powered by	Apache Yetus 0.10.0 http://yetus.apache.org

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[anuengineer]

@elek Thanks for the contribution. @bharatviswa504 Thanks for the review. I have committed this to the trunk.