[v9_16] Install BIND with "make DESTDIR=<PATH> install"
BIND installation should be done by setting DESTDIR during "make install" not by setting prefix via ./configure.
Make sure that installation with DESTDIR= works by checking that named binary and it's respective man page were installed and that well-known BIND9 directories - and only them - are present in DESTDIR.
Also rename install path variable from BIND_INSTALL_PATH to INSTALL_PATH to avoid namespace clash in stress tests which use BIND_INSTALL_PATH variable to configure path to BIND9 binaries.
(cherry picked from commit 823bf3e7)