configure basic settings on Nexus-RM locally and provide recommended settings in a document

configure repos and install packages to test

• yum
• python document other settings that will be needed to deploy in P1
• expire cache artifacts after not downloaded in X days Helm settings:
• increase cpu to 4

[x] update version

questions:

• do we want to force authorization to download/request items from Nexus RM?
• how can we do AV scanning