Revert "Merge "Revert "Bug 1764 - added service for pushing default node configuration"" into stable/helium"

This reverts commit 3d26b3152786022cd320a0ff76c613604ca232c9, reversing
changes made to 7ff90e8c7ef06d666888ead8731af94aab1a2c87.

Need to revert for Helium SR1.

Change-Id: I853cc600852d36d780bf4c059873494dad15641c
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>
Revert "BUG-2254 Enable schema-less rpcs invocation in netconf-connector"

This reverts commit 7ff90e8c7ef06d666888ead8731af94aab1a2c87.

Need to revert for Helium SR1.

Change-Id: If214f52ea883fd59b1893863d0dc0384ac6cc755
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>