* Add a new operating mode to rippled called reporting mode
* Add ETL mechanism for a reporting node to extract data from a p2p node
* Add new gRPC methods to faciliate ETL
* Use Postgres in place of SQLite in reporting mode
* Add Cassandra as a nodestore option
* Update logic of RPC handlers when running in reporting mode
* Add ability to forward RPCs to a p2p node
Remove the implicit conversion from int64 to XRPAmount. The motivation for this
was noticing that many calls to `to_string` with an integer parameter type were
calling the wrong `to_string` function. Since the calls were not prefixed with
`std::`, and there is no ADL to call `std::to_string`, this was converting the
int to an `XRPAmount` and calling `to_string(XRPAmount)`.
Since `to_string(XRPAmount)` did the same thing as `to_string(int)` this error
went undetected.
Resource limits were not properly applied to connections with
known IP addresses but no corresponding users.
Add unit tests for unlimited vs. limited ports.
Fixes: RIPD-1574
Alias beast address classes to the asio equivalents. Adjust users of
address classes accordingly. Fix resolver class so that it can support
ipv6 addresses. Make unit tests use ipv6 localhost network. Extend
endpoint peer message to support string endpoint
representations while also supporting the existing fields (both are
optional/repeated types). Expand test for Livecache and Endpoint.
Workaround some false positive ipaddr tests on windows (asio bug?)
Replaced usage of address::from_string(deprecated) with free function
make_address. Identified a remaining use of v4 address type and
replaced with the more appropriate IPEndpoint type (rpc_ip cmdline
option). Add CLI flag for using ipv4 with unit tests.
Release Notes
-------------
The optional rpc_port command line flag is deprecated. The rpc_ip
parameter now works as documented and accepts ip and port combined.
Add envconfig test helper for manipulating Env config via
callables. Create new common modifiers for non-admin config,
validator config and one for using different server port values.
