chore: remove trailing whitespaces from bash scripts

[xuriwuyun]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (3f6f784) to head (d46987c).

Files with missing lines	Patch %	Lines
...cripts-ut-spec/redis_sentinel_member_leave_spec.sh	0.00%	2 Missing ⚠️
.../apecloud-mysql/scripts-ut-spec/etcd_clean_spec.sh	0.00%	1 Missing ⚠️
...dons/apecloud-mysql/scripts-ut-spec/vtctld_spec.sh	0.00%	1 Missing ⚠️
addons/etcd/scripts-ut-spec/member_join_spec.sh	0.00%	1 Missing ⚠️
...ns/mysql/scripts-ut-spec/configre_proxysql_spec.sh	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           release-1.0   #2495   +/-   ##
===========================================
  Coverage         0.00%   0.00%           
===========================================
  Files               61      61           
  Lines             6278    6278           
===========================================
  Misses            6278    6278           

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