refactor: set default metasrv procedure retry times to 12

[WenyXu]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

Set default metasrv procedure retry times to 12

Delay(s)	Time	Retry Delay(s)	Acc Delay(s)	Procedure(s)	Start(s)	End(s)	Start(m)	End(m)
0.5	1	0.5	1	30	1	31	0.0	0.5
	2	1	1.5	60	1.5	61.5	0.0	1.0
	3	2	3.5	90	3.5	93.5	0.1	1.6
	4	4	7.5	120	7.5	127.5	0.1	2.1
	5	8	15.5	150	15.5	165.5	0.3	2.8
	6	16	31.5	180	31.5	211.5	0.5	3.5
	7	32	63.5	210	63.5	273.5	1.1	4.6
	8	64	127.5	240	127.5	367.5	2.1	6.1
	9	128	255.5	270	255.5	525.5	4.3	8.8
	10	256	511.5	300	511.5	811.5	8.5	13.5
	11	512	1023.5	330	1023.5	1353.5	17.1	22.6
	12	1024	2047.5	360	2047.5	2407.5	34.1	40.1

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

Merging #2242 (a09b70c) into develop (a7e0e23) will decrease coverage by 0.37%.
Report is 2 commits behind head on develop.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop    #2242      +/-   ##
===========================================
- Coverage    85.00%   84.64%   -0.37%     
===========================================
  Files          704      706       +2     
  Lines       115202   115557     +355     
===========================================
- Hits         97929    97809     -120     
- Misses       17273    17748     +475     

[MichaelScofield]

Suggestion: add comments about the consequence of the retry strategy. For example, max time a procedure can last; retry interval etc.

[fengjiachun]

LGTM