HBASE-25380 [create-release] Add timestamping to log output

[saintstack]

Added logging of timestamp so we can tell where we are spending time.
Added context to the README copied from head of entrance script.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 39s	Docker mode activated.
-0 ⚠️	yetus	0m 4s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+0 🆗	mvndep	0m 22s	Maven dependency ordering for branch
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 8s	Maven dependency ordering for patch
		_ Other Tests _
		2m 6s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2758/1/artifact/yetus-jdk8-hadoop3-check/output/Dockerfile
GITHUB PR	#2758
Optional Tests
uname	Linux 9698d6e1403c 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / c853c99
Max. process+thread count	49 (vs. ulimit of 30000)
modules	C: U:
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2758/1/console
versions	git=2.17.1 maven=3.6.3
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 37s	Docker mode activated.
-0 ⚠️	yetus	0m 3s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+0 🆗	mvndep	0m 25s	Maven dependency ordering for branch
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 9s	Maven dependency ordering for patch
		_ Other Tests _
		2m 12s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2758/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#2758
Optional Tests
uname	Linux 2d765bc744df 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/hbase-personality.sh
git revision	master / c853c99
Max. process+thread count	47 (vs. ulimit of 30000)
modules	C: U:
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2758/1/console
versions	git=2.17.1 maven=3.6.3
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 10s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+0 🆗	shelldocs	0m 0s	Shelldocs was not available.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
		_ master Compile Tests _
+0 🆗	mvndep	0m 22s	Maven dependency ordering for branch
		_ Patch Compile Tests _
+0 🆗	mvndep	0m 7s	Maven dependency ordering for patch
+1 💚	shellcheck	0m 4s	There were no new shellcheck issues.
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
		_ Other Tests _
+0 🆗	asflicense	0m 0s	ASF License check generated no output?
		2m 52s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2758/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#2758
Optional Tests	dupname asflicense shellcheck shelldocs
uname	Linux 9ba0d174dbaf 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / c853c99
Max. process+thread count	51 (vs. ulimit of 30000)
modules	C: U:
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2758/1/console
versions	git=2.17.1 maven=3.6.3 shellcheck=0.4.6
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[saintstack]

Thanks @apurtell

[saintstack]

Signed-off-by: Andrew Purtell apurtell@apache.org