Only pip install once

[larsevj]

Build time before onprem-py38-rhel8:

Time report:
 * Fetching all packages                              0:02:57.814145
 * Building non-pip part of komodo in workspace       0:09:49.380733
 * Rsyncing partial komodo to destination             0:09:45.290905
 * Deleting previous release                          0:04:39.683807
 * pip install to final destination                   0:13:00.653841
 * find and delete python bytecode files              0:00:10.982217
 * set permissions                                    0:04:44.387435

after:

Time report:
 * Fetching all packages                              0:02:49.205024
 * Building non-pip part of komodo in workspace       0:04:36.795093
 * Rsyncing partial komodo to destination             0:00:27.331234
 * Deleting previous release                          0:04:33.032115
 * pip install to final destination                   0:06:27.383606
 * set permissions                                    0:02:37.841149
 * Compile python bytecode files                      0:01:41.551052