MT#8763 check for .git before running the services

On a multi directory config, the services depends on git. Check
first if the git repository exists and warn about it

Change-Id: I52e335c85ecf4a330da44b3088725623f3c04531

scripts/services

@@ -41,7 +41,16 @@ unifyer() {
 }
 
 for dir in ${CONFIG_POOL} ; do
+  (
+  if ! [[ "${dir}" =~ ^/ ]] ; then
+    log_error "${dir} is not an absolute path"
+    continue
+  fi
   cd "${dir}"
+  if [ ! -d .git ] ; then
+    log_info "$dir has no support of .services"
+    continue
+  fi
   for file in $(git status --porcelain | sed 's/^...//') ; do
     if [ -r "$file" ] && [ -r "${SERVICES_POOL_BASE}/${dir}/${file}".services ] ; then
       log_debug "unifyer ${SERVICES_POOL_BASE}/${dir}/${file}.services"
@@ -51,6 +60,7 @@ for dir in ${CONFIG_POOL} ; do
       unifyer "${SERVICES_POOL_BASE}/${dir}"/"$(dirname $file)/ngcpcfg.services"
     fi
   done
+  )
 done
 
 exec_wrapper() {