[FAB-9553] Fix Vagrant runtime environment

Recent changes have broken runtime in Vagrant environments:

1) binaries directory has changed from /build/bin directory
to /.build/bin directory

2) /fabric/sampleconfig directory no longer picked up by default,
must specify FABRIC_CFG_PATH env variable.

This change fixes Vagrant environment accordingly.

Change-Id: I33f5261516694089a3190af6c3c10f54c3dd5685
Signed-off-by: David Enyeart <enyeart@us.ibm.com>

Author: denyeart

devenv/setup.sh

@@ -121,7 +121,8 @@ sudo cp /hyperledger/fabric/devenv/limits.conf /etc/security/limits.conf
 # Configure vagrant specific environment
 cat <<EOF >/etc/profile.d/vagrant-devenv.sh
 # Expose the devenv/tools in the $PATH
-export PATH=\$PATH:/hyperledger/fabric/devenv/tools:/hyperledger/fabric/build/bin
+export PATH=\$PATH:/hyperledger/fabric/devenv/tools:/hyperledger/fabric/.build/bin
+export FABRIC_CFG_PATH=/hyperledger/fabric/sampleconfig/
 export VAGRANT=1
 export CGO_CFLAGS=" "
 EOF