Execute ingest node pipeline before creating the index (#39607)

[jakelandis]

Prior to this commit (and after 6.5.0), if an ingest node changes
the _index in a pipeline, the original target index would be created.
For daily indexes this could create an extra, empty index per day.

This commit changes the TransportBulkAction to execute the ingest node
pipeline before attempting to create the index. This ensures that the
only index created is the original or one set by the ingest node pipeline.
This was the execution order prior to 6.5.0 (#32786).

The execution order was changed in 6.5 to better support default pipelines.
Specifically the execution order was changed to be able to read the settings
from the index meta data. This commit also includes a change in logic such
that if the target index does not exist when ingest node pipeline runs, it
will now pull the default pipeline (if one exists) from the settings of the
best matched of the index template.

Relates #32786
Relates #32758
Closes #36545

[jakelandis]

@elasticmachine run elasticsearch-ci/bwc

(unrelated error)

11:12:49 runbld>>> Sending debug log to infra-root+runbld-debug@e***.co
11:12:50 #error {
11:12:50  :cause /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/jre/lib/ext/dnsns.jar
11:12:50  :via
11:12:50  [{:type java.lang.InternalError
11:12:50    :message java.io.FileNotFoundException: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/jre/lib/ext/dnsns.jar
11:12:50    :at [sun.misc.URLClassPath$JarLoader getResource URLClassPath.java 1052]}
11:12:50   {:type java.io.FileNotFoundException
11:12:50    :message /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/jre/lib/ext/dnsns.jar
11:12:50    :at [sun.misc.URLClassPath$JarLoader getJarFile URLClassPath.java 938]}]