fix class KeyError original message: ansible_host #1492

Job	Run time
Execute install_dbserver tests for PostgreSQL 14 on RockyLinux8	2m 0s
Execute init_dbserver tests for PostgreSQL 14 on RockyLinux8	2m 7s
Execute manage_dbserver tests for PostgreSQL 14 on RockyLinux8	2m 21s
Execute ansible-lint	59s
Execute manage_pgbouncer tests for PostgreSQL 14 on RockyLinux8	2m 3s
Execute manage_pgpool2 tests for PostgreSQL 14 on RockyLinux8	2m 23s
Execute setup_dbt2 tests for PostgreSQL 14 on RockyLinux8	2m 19s
Execute setup_dbt2_client tests for PostgreSQL 14 on RockyLinux8	2m 24s
Execute setup_dbt2_driver tests for PostgreSQL 14 on RockyLinux8	2m 3s
Execute setup_dbt3 tests for PostgreSQL 14 on RockyLinux8	2m 47s
Execute setup_dbt7 tests for PostgreSQL 14 on RockyLinux8	2m 12s
Execute setup_pgbouncer tests for PostgreSQL 14 on RockyLinux8	2m 32s
Execute setup_pgpool2 tests for PostgreSQL 14 on RockyLinux8	2m 36s
Execute setup_replication tests for PostgreSQL 14 on RockyLinux8	2m 29s
Execute setup_repmgr tests for PostgreSQL 14 on RockyLinux8	2m 47s
Execute setup_repo tests for PostgreSQL 14 on RockyLinux8	2m 24s
	36m 26s

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