HBASE-27042. Remove S3Guard awareness from HBoss

* Cut HBoss test code which would explicitly disable S3Guard
  -obsolete and breaks the build on forthcoming hadoop releases.
* Also cut all references in docs and XML.
* EmbeddedS3 to implement deleteObject() and so support
  AWS SDKs 1.11.1026+, which expects this (hadoop 3.3.2+).
* Maven test runs to provide full stack traces on failures,
  so runtime failures can be debugged and fixed.

Change-Id: Iab10cfc6780cea064ea116efc1c177332d780514
Signed-off-by: Josh Elser <elserj@apache.org>
5 files changed