transactions_count metric is missing before the first transaction

[resonant-riches]

Instead of reporting a value of zero if there have been no transactions with the respective status, the metric is missing entirely. This means that an increase expression on the transactions_count_total metric will be off by one after a restart of the oracle service - it will not count the first transaction.

Actual behaviour (6.0.2, built from source):

# HELP lido_oracle_transactions_count_total Total count of transactions. Success or failure
# TYPE lido_oracle_transactions_count_total counter
lido_oracle_transactions_count_total{status="Status.SUCCESS"} 1.0

Expected behaviour:

# HELP lido_oracle_transactions_count_total Total count of transactions. Success or failure
# TYPE lido_oracle_transactions_count_total counter
lido_oracle_transactions_count_total{status="Status.SUCCESS"} 1.0
lido_oracle_transactions_count_total{status="Status.FAILURE"} 0.0

[resonant-riches]

According to @F4ever this will be fixed in v8