Give correct labeling of nodes in parallel

[hnil]

This corrects several issues with labeling of nodes. It include correct addition of corners for main the call used in opm-flow and for proper use depend on edge conformal processing.

[blattms]

jenkins build this please

[blattms]

benchmark please

[ytelses]

Benchmark result overview:

Test	Configuration	Relative
opm-git	OPM Benchmark: drogon - Threads: 1	0.86
opm-git	OPM Benchmark: drogon - Threads: 8	0.946
opm-git	OPM Benchmark: punqs3 - Threads: 1	1.024
opm-git	OPM Benchmark: punqs3 - Threads: 8	0.989
opm-git	OPM Benchmark: smeaheia - Threads: 1	1
opm-git	OPM Benchmark: smeaheia - Threads: 8	0.995
opm-git	OPM Benchmark: spe10_model_1 - Threads: 1	1.014
opm-git	OPM Benchmark: spe10_model_1 - Threads: 8	1.012
opm-git	OPM Benchmark: flow_mpi_extra - Threads: 1	0.967
opm-git	OPM Benchmark: flow_mpi_extra - Threads: 8	0.973
opm-git	OPM Benchmark: flow_mpi_norne - Threads: 1	1.008
opm-git	OPM Benchmark: flow_mpi_norne - Threads: 8	1.004
opm-git	OPM Benchmark: flow_mpi_norne_4c_msw - Threads: 1 - FOPT (Total Oil Production At End Of Run)	0.998
opm-git	OPM Benchmark: flow_mpi_norne_4c_msw - Threads: 8 - FOPT (Total Oil Production At End Of Run)	1.002

• Speed-up = Total time master / Total time pull request. Above 1.0 is an improvement. *

View result details @ https://www.ytelses.com/opm/?page=result&id=2857