[CNS] update submodule packages/openwrt to support glib2 dependency on libattr  (#200, #607)
[VCT] enable definition of make directives, eg: vct_build_node_base_image(_clean) SPECIFICS=atom32 V=s J=1
[VCT] vct_system_install: add packages (recommended by openwrt make):  automake, autoconf help2man
[VCT] Increase time between state retrieval.

A very short time between requests to node API cause a premature
invalidation of current state (appears as NODATA) although app
works properly and node is up and replying.