Improve jvppgen object array member instantiation
Improve jvppgen object array member instantiation

Since all objects of the array have the same type, the object
constructor is a loop invariant. Move the lookup out of the loop,
making things faster.

Change-Id: I631c72b59c6c63eccd49ede41c6dc0541c325db9
Signed-off-by: Robert Varga <91ae5aa8c7a9f7e57b701db766e23e544aaa6ae9@pantheon.tech>
Signed-off-by: Robert Varga <934bee5bfb2180d3ffa181ef3ed7d341cfd7e2b7@hq.sk>

FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp