[hotfix][cdc-common] Remove duplicated code to improve performance #121

Job	Run time
License Check	3m 50s
Migration Tests / data_stream_migration_test (8, 1.19.1)	11m 57s
Migration Tests / migration_test_ut (8, 1.19.1)	4m 49s
Migration Tests / migration_test_ut (8, 1.20.0)	5m 2s
Migration Tests / data_stream_migration_test (8, 1.20.0)	12m 8s
Migration Tests / pipeline_migration_test (8, 1.19.1)	7m 48s
Migration Tests / pipeline_migration_test (8, 1.20.0)	6m 21s
Unit Tests (core) / compile_and_test (8, generic)	29m 45s
Source E2E Tests / compile_and_test (8, 1.19.1)	25m 25s
Unit Tests (db2) / compile_and_test (8, generic)	20m 17s
Source E2E Tests / compile_and_test (8, 1.20.0)	25m 9s
Unit Tests (mongodb6) / compile_and_test (8, generic)	35m 13s
Unit Tests (mongodb7) / compile_and_test (8, generic)	33m 44s
Unit Tests (mysql) / compile_and_test (8, generic)	38m 2s
Unit Tests (oceanbase) / compile_and_test (8, generic)	5m 51s
Pipeline E2E Tests (1-Parallelism) / compile_and_test (8, 1.19.1)	34m 8s
Pipeline E2E Tests (4-Parallelism) / compile_and_test (8, 1.19.1)	34m 12s
Pipeline E2E Tests (1-Parallelism) / compile_and_test (8, 1.20.0)	34m 15s
Pipeline E2E Tests (4-Parallelism) / compile_and_test (8, 1.20.0)	33m 22s
Unit Tests (oracle) / compile_and_test (8, generic)	29m 29s
Unit Tests (pipeline_connectors) / compile_and_test (8, generic)	20m 35s
Unit Tests (postgres) / compile_and_test (8, generic)	25m 17s
Unit Tests (sqlserver) / compile_and_test (8, generic)	13m 21s
Unit Tests (vitess) / compile_and_test (8, generic)	3m 28s
Unit Tests (tidb) / compile_and_test (8, generic)	3m 1s
	8h 16m 29s

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