Change srsLTE to Full Native Charm

Changes the charm from relying on a prepackaged image to
building srsue and srsenb from tagged source.
Updates the descriptor to use generic name for relation.

Signed-off-by: beierlm <mark.beierl@canonical.com>
1 job for !95 with beierlm-new-srsLTE in 1 minute and 22 seconds (queued for 1 minute and 4 seconds)
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Status Job ID Name Coverage
  Build
passed #138
build-local-repository

00:01:22