Revert "Move ishmael to the new ldap servers."

This reverts commit 1bdc047d6beff56040a72ab56d87458057d9bed4.

Change-Id: Ic575f2a3c57a6eb3d0632d09e7f313bcee6fc52d
Merge "Revert "Move ishmael to the new ldap servers."" into production