refactor(muta): calculate block_hash with header and refactor get_full_transactions

[rev-chaos]

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

[muta-bot]

Accept request.

[muta-bot]

Docker builded. "mutadev/muta:5c4dc7f"
Run chaos test on k8s named "muta-pr285"

[muta-bot]

Accept request.

[muta-bot]

Docker builded. "mutadev/muta:4a7c26e"
Run chaos test on k8s named "muta-pr285"

[muta-bot]

Accept request.

[muta-bot]

Docker builded. "mutadev/muta:1444350"
Run chaos test on k8s named "muta-pr285"

[muta-bot]

Accept request.

[muta-bot]

Docker builded. "mutadev/muta:0806728"
Run chaos test on k8s named "muta-pr285"

[muta-bot]

Date(muta-pr285)	1	2	3	4
2020-05-13T12:27:17.004Z	20	20	20	20
2020-05-13T12:31:17.040Z	148	150	150	150
2020-05-13T12:35:17.076Z	279	279	279	279
2020-05-13T12:39:17.196Z	393	393	393	393
2020-05-13T12:43:18.624Z	488	488	488	488
2020-05-13T12:47:18.668Z	631	631	631	631
2020-05-13T12:51:18.704Z	750	750	750	750
2020-05-13T12:55:18.756Z	884	884	884	884
2020-05-13T12:59:18.800Z	993	993	993	993
2020-05-13T13:03:18.848Z	1127	1127	1127	1127
2020-05-13T13:07:18.896Z	1260	1260	1260	1260
2020-05-13T13:11:21.972Z	1397	1397	1397	1397
2020-05-13T13:15:22.012Z	1528	1530	1531	1531
2020-05-13T13:19:41.544Z	1660	1660	1660	1660
2020-05-13T13:23:41.580Z	1785	1785	1785	1785
2020-05-13T13:27:41.652Z	1926	1926	1926	1926
2020-05-13T13:31:41.692Z	2066	2066	2066	2066
2020-05-13T13:35:41.740Z	2200	2200	2200	2200
2020-05-13T13:39:41.792Z	2331	2331	2331	2331
2020-05-13T13:43:41.824Z	2453	2453	2453	2453
2020-05-13T13:47:41.864Z	2597	2597	2597	2597
2020-05-13T13:51:42.132Z	2719	2719	2719	2719
2020-05-13T13:55:42.192Z	2841	2842	2842	2842
2020-05-13T13:59:42.292Z	2971	2971	2971	2971

tx_block	sec_block	tx_sec	avg_round
349.00	15.00	23.00	0