tests: use only bindable ports for test servers

Conflicts:
	tests/test_base.cpp
Merge pull request #417 from euroelessar/lts

tests: use only bindable ports for test servers (lts)
v2.24.15.14
Do not request route list in reconnect thread if node flags contains DNET_CFG_NO_ROUTE_LIST. Added ability to set node flags in dnet_ioclient by '-f'.
Merge pull request #418 from shaitan/lts

Do not request route list in reconnect thread if node flags contains DNE...
v2.24.15.15
Merge pull request #419 from shaitan/lts

v2.24.15.15
Merge remote-tracking branch 'upstream/lts' into lts