Add python38 module to AppStream, and python38-devel module to CRB.
Merge upstream commit ad33c50beefabbb735fe0e2947c4ad18542bd4b4:
python38 module added to AppStream in RHEL 8.2.0 - RCM-71472
Change-Id: I369d3f11bd8a735395ee86b98ea6b570c3bb4ae4
Merge upstream commit eea7bf16f4228682a72b4113d09099bf7ecbdc34:
also including the -devel python38 module in CRB - RCM-71472
Change-Id: I8124ba13bcdd1fa0a2937e1125c232a17b390bb5