Fixes gh-1636

Previously, Tomcat initialization would only log the port of the
primary connector and would omit the scheme, whereas once Tomcat was
started the port of every connector and their schemes would be logged.

This commit makes things symmetrical by updating the logging performed
at initialization to include every connector's port and scheme.

During initialization the port number that the connector the has
been configured with is logged. This means that, if the connector has
been configured to bind to an free port, 0 will be logged. Once
Tomcat has started, the number of the port that the connector has
bound to is logged.

Closes gh-1601

Closes gh-1621

To make it easier to identify the source of the competing LoggerFactory
implementation, this commit updates the exception message to include
the code source location of the offending class.

Closes gh-1630

Closes gh-1643

Allow the environment to be used to configure Jackson's date format
and property naming strategy

Closes gh-1628

Closes gh-1627

Without the @Param annotations, using either of the search URIs would
resulted in a 400 response and an error describing the lack of @Param
annotation.

See gh-1627

* pull1633:
  Fix typo in javadoc

* spring-boot-amq-version-upgrade:
  Upgraded ActiveMQ version to 5.10.0

Fixes gh-1609

* pull1618:
  Add UTF-8 charset element to logback base.xml

Update base logback configuration to include a UTF-8 charset element
which helps with multilanguage support.

Fixes gh-1618

Conflicts:
	all pom.xml files

Update Tomcat ServerProperties to support the RemoteIpValve portHeader
property.

Fixes gh-1616

The `protocolHeader` and `remoteIpHeader` no longer have default values
and must be opt-in.

Fixes gh-1624

In some scenarios, the ErrorPageFilter will want to forward the request
to an error page but the response has already been committed. One common
cause of this is when the filter’s running on WAS. WAS calls
flushBuffer() (which commits the response), upon a clean exit from a
servlet’s service method.

Previously, the filter would attempt the forward, even if the response
was committed. This would result in an IllegalStateException and a
possibly incomplete response that may also have an incorrect status
code.

This commit updates the ErrorPageFilter to check to see if the response
has already been committed before it attempts to forward the request to
the error page. If the response has already been committed, the filter
logs an error and allows the container’s normal handling to kick in.
This prevents an IllegalStateException from being thrown.

This commit also updates the response wrapper to keep track of when
sendError has been called. Now, when flushBuffer is called, if
sendError has been called, the wrapper calls sendError on the wrapped
response. This prevents the wrapper from suppressing an error when the
response is committed before the request handling returns to the error
page filter.

Closes gh-1575

Restore the test removed during the merge.

Remove accidental addition of a 1.2 test.