Add charmcraft.yaml debug_mode to charmed-osm

- Added a debug_mode option to lcm, mon, nbi, pol, and ro charms
- Added a script to prepare pods for debugging:
  - setup .ssh/config to easily ssh from vscode to the pods
- Added a README that explains how to prepare the environment for
testing

Change-Id: Ieb56b565c15e61c68ad000b60897abd27e1eeb0e
Signed-off-by: David Garcia <david.garcia@canonical.com>
diff --git a/installers/charm/prometheus/tox.ini b/installers/charm/prometheus/tox.ini
index 30e0ea8..c341c8e 100644
--- a/installers/charm/prometheus/tox.ini
+++ b/installers/charm/prometheus/tox.ini
@@ -95,19 +95,22 @@
 #######################################################################################
 [testenv:build]
 passenv=HTTP_PROXY HTTPS_PROXY NO_PROXY
-deps = charmcraft
 whitelist_externals =
   charmcraft
-  cp
+  sh
 commands =
   charmcraft build
-  cp -r build release
+  sh -c 'ubuntu_version=20.04; \
+        architectures="amd64-aarch64-arm64"; \
+        charm_name=`cat metadata.yaml | grep -E "^name: " | cut -f 2 -d " "`; \
+        mv $charm_name"_ubuntu-"$ubuntu_version-$architectures.charm $charm_name.charm'
 
 #######################################################################################
 [flake8]
 ignore =
         W291,
         W293,
+        W503,
         E123,
         E125,
         E226,