Upgrade Jackson to 2.9.10 (Netflix#1284)

Add stats for DiscoveryClient (Netflix#1282)

Introduce a nested class for `DiscoveryClient` to make it easier for
users to read helpful attributes that can assist in log analysis and
debugging. Most of these attributes are captured by existing metrics:

- `initTimestampMs`: timestamp when the client was initialized
- `localRegistrySize`: number of instances for all applications
- `lastSuccessfulRegistryFetchTimestampMs`: timestamp for last successful fetch
- `lastSuccessfulHeartbeatTimestampMs`: timestamp for last successful heartbeat

Add a new attribute called `initLocalRegistrySize`, which is the
number of instances for all applications read when the client was
initialized. Include a helper method that uses this attribute so
that users can determine whether the client's initial fetch of registry
information succeeded or failed. Note that other accessors are suffixed
with `Ms` (for milliseconds) to denote the time unit.

Additionally, update the existing `registrySize` with the value from
`initLocalRegistrySize` during initialization instead of waiting until
the first local registry refresh.

Co-authored-by: John Bennett <[email protected]>

Allow to use the public IPv4 address as the primary if enabled (Netfl…

…ix#1275)

Decrement expectedNumberOfClientsSendingRenews for expired leases (Ne…

…tflix#1271)

Move the logic that decrements the expected number of clients into
cancelInternal - this should ensure that we're calling it both for
explicit cancels as well as well as when the instance lease expires.

Fixes Netflix#1266.

Disable jersey2 json auto discovery (Netflix#1262)

Gracefully handle HTML errors from Eureka server (Netflix#1265)

It is possible to get HTML responses from the server (e.g. Apache fails to
talk to backend API). These would result in a failure to deserialize
and a random exception logged.

Cleanup resources on web-app shutdown (Netflix#1207) (Netflix#1251)

Use HashMap if CompactHashMap is not available on classpath (Netflix#…

…1235)

This allows eureka users to exclude compactmap library if they so choose.

Merge pull request Netflix#1218 from elandau/bugfix/discovery_client_…

…constructor

Put back deprecated constructor

Update woodstox to 5.x (Netflix#1216)