Adding new External Storage nodes as MariaDB::core

4 new machines have been installed.
es1011 and es1012 are on A2.
es1017 and es1018 are on D1.

es1011 and es1017 will go to shard es2.
es1012 and es1018 will go to shard es3.

Bug: T105843
Change-Id: Iae0ef8330ff8b2f15fe80ffbc58e04e6bd0d7099