symlinked pump names don't work as expected

[reidsunderland]

@andreleblanc11 noticed this.

When the pump name directory is a symlink, sr3_tools uses the link target as the pump name.

e.g.:

sr3-config/
├── _dsh_config
├── cluster_A -> cluster_1/
└── cluster_1

# we're in the cluster_A pump directory, but sr3_tools uses cluster_1 as the pump name
user@srv:~/sr3-config/cluster_A$ sr3l pwd
Data Pump Name: cluster_1. DSH Machine List: /home/user/sr3-config/_dsh_config/cluster_1.list

This is a good thing if you want cluster_A to just be an alternative name for cluster_1.

But it's bad if you want cluster_A and cluster_1 to be different clusters that share the same configs.

The problem comes from this line in the code:

sr3_tools/bin/sr3_utils

Line 14 in d17a080

pump_name=$(pwd -P | sed "s|$(git rev-parse --show-toplevel)||g" | cut -d '/' -f 2)

git rev-parse --show-toplevel always returns a real path and when I wrote it, I wanted to ensure it would work on a system that used symlinked home directories so I used pwd -P.