Additional Cassandra Attributes

[FrankSpitulski]

What are you trying to achieve?
I'd like to define more cassandra attributes, as requested by @trask in open-telemetry/opentelemetry-java-instrumentation#1314 (comment)
Additionally, some of these tags may apply to other DBs as well.

What did you expect to see?

I expected to see more detailed information, including table name, query execution information, etc. Listed below.

  public static final String QUERY_PAGE_SIZE = "query.pageSize";
  public static final String QUERY_CL = "query.cl"; // consistency level
  public static final String DB_HOST_DC = "db.host.dc";
  public static final String DB_HOST_ID = "db.host.id";
  public static final String QUERY_SPECULATIVE_EXECUTION_COUNT = "query.speculativeExecutionCount";
  public static final String QUERY_IDEMPOTENCE = "query.idempotence";
  public static final String QUERY_TABLE = "query.table";

Additional context.

Add any other context about the problem here. If you followed an existing documentation, please share the link to it.

Some of these tags already exist in the opentracing cassandra instrumentation https://github.com/opentracing-contrib/java-cassandra-driver/blob/master/opentracing-cassandra-driver-3/src/main/java/io/opentracing/contrib/cassandra/TracingSession.java#L500

[trask]

@open-telemetry/specs-approvers are new semantic attributes allowed-for-ga, or on hold until after-ga? thx

[arminru]

@trask If they don't extend existing conventions with required attributes but are either entirely new or only add optional attributes, they should be allowed-for-ga IMHO, since they won't produce any additional work for SIGs.