repotest: add json linting

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I99dadfac3c2d324bb5ef6a5ab399ad35825b34d5
diff --git a/meta-phosphor/scripts/run-repotest b/meta-phosphor/scripts/run-repotest
index 8c47e53..c841b65 100755
--- a/meta-phosphor/scripts/run-repotest
+++ b/meta-phosphor/scripts/run-repotest
@@ -188,7 +188,9 @@
 meta-yadro/meta-nicole/recipes-phosphor/chassis/avsbus-control/avsbus-control.sh
 "
 
-types=(shell)
+types=(json shell)
+# shellcheck disable=SC2034
+check_json="eslint --resolve-plugins-relative-to /usr/local/lib/node_modules"
 # shellcheck disable=SC2034
 check_shell="shellcheck -x"
 
@@ -215,12 +217,19 @@
             file_type="shell"
             ;;
 
+        *JSON\ data*)
+            file_type="json"
+            ;;
+
         *)
             case $f in
                 *.sh)
                     file_type="shell"
                     ;;
 
+                *.json)
+                    file_type="json"
+                    ;;
             esac
     esac