formula-fetch: Allow local fs git URI

Also fetch formulas from locations like:
FORMULA_SOURCES='file:///home/salt/formulas http://github.com/...'

To keep this change light, piggy-back on the fact that `hosting` is
empty for 'file://<absolute path to formulas dir>'.

Signed-off-by: Alexandru Avadanii <[email protected]>

formula-fetch.sh

@@ -108,7 +108,7 @@ function fetchGitFormula() {
                 # Fallback to the master branch if the branch doesn't exist for this repository
                 branch=master
               fi
-              if ! git clone "$origin" "$FORMULAS_BASE/$repo" -b "$branch"; then
+              if ! git clone --no-hardlinks "$origin" "$FORMULAS_BASE/$repo" -b "$branch"; then
                 echo -e "[E] Fetching formula from $origin failed."
                 return ${FAIL_ON_ERRORS:-0}
               fi
@@ -208,6 +208,11 @@ function setupPyEnv() {
   }
 }
 
+function listRepos_() {
+  # local filesystem lister ('hosting' is empty for abspaths, e.g. file:///home/...)
+  ls "$1" -1
+}
+
 function listRepos_github_com() {
   #export python=$(pipenv --py || (setupPyEnv &>/dev/null; pipenv --py))
   if [ -e Pipfile.lock ]; then python=$(pipenv --py); else python=python3; fi
@@ -241,6 +246,7 @@ function fetchAll() {
   for source in $(echo ${FORMULA_SOURCES} | xargs -n1 --no-run-if-empty); do
     hosting=$(echo ${source//\./_} | awk -F'/' '{print $3}')
     orgname=$(echo ${source//\./_} | awk -F'/' '{print $4}')
+    [ -n "${hosting}" ] || orgname=$(echo ${source#*//})
 
     # Get repos. To protect builds on master we likely fail on errors/none while getting repos from $source
     set -o pipefail