package/sysrepo: remove explicit setting of CMAKE_BUILD_TYPE

package/sysrepo: remove explicit setting of CMAKE_BUILD_TYPE

sysrepo explicitly sets CMAKE_BUILD_TYPE=Release, ignoring any possible
value of BR2_ENABLE_DEBUG (previously) or BR2_ENABLE_RUNTIME_DEBUG (now).

With the introduction of BR2_ENABLE_RUNTIME_DEBUG, this change should no
longer be necessary. Users that do not wish to have additional runtime
debugging just keep BR2_ENABLE_RUNTIME_DEBUG disabled (default value).

As the 'Debug' build type enables tests, disable them explicitly.
As the 'Debug' build type uses a custom REPO_PATH which does not exist on
target, force /etc/sysrepo like in the 'Release' build type.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>