Add bazel rule to run buildifier; fix up formatting problems in bazel files

Change-Id: Ifa8ab12ed564fa2eaf5edd781281aa5cae52d17a
diff --git a/apps/openstacknode/openstack4j.bzl b/apps/openstacknode/openstack4j.bzl
index fc68a41..096b700 100644
--- a/apps/openstacknode/openstack4j.bzl
+++ b/apps/openstacknode/openstack4j.bzl
@@ -3,39 +3,37 @@
 ALL_PACKAGES = "*"
 
 def get_openstack4j_deps_path():
-
-    WEB_INF_PATH = 'WEB-INF/classes/deps/'
+    WEB_INF_PATH = "WEB-INF/classes/deps/"
     OPENSTACK4J_DEPS = [
-        'openstack4j-core',
-        'openstack4j-http-connector',
-        'openstack4j-httpclient',
+        "openstack4j-core",
+        "openstack4j-http-connector",
+        "openstack4j-httpclient",
     ]
-    OPENSTACK4J_VER = '3.1.0'
+    OPENSTACK4J_VER = "3.1.0"
 
-    openstack_deps_path = ''
+    openstack_deps_path = ""
 
     for dep in OPENSTACK4J_DEPS:
-        name = dep + '-' + OPENSTACK4J_VER + '.jar'
+        name = dep + "-" + OPENSTACK4J_VER + ".jar"
         path = WEB_INF_PATH + name
-        openstack_deps_path = openstack_deps_path + path + ','
+        openstack_deps_path = openstack_deps_path + path + ","
 
     return openstack_deps_path
 
 def get_jackson_deps_path():
-
-    WEB_INF_PATH = 'WEB-INF/classes/deps/'
+    WEB_INF_PATH = "WEB-INF/classes/deps/"
     JACKSON_DEPS_WITH_VER = [
-        'json-patch-1.9.jar',
-        'jackson-coreutils-1.6.jar',
-        'msg-simple-1.1.jar',
-        'btf-1.2.jar',
-        'snakeyaml-1.15.jar'
+        "json-patch-1.9.jar",
+        "jackson-coreutils-1.6.jar",
+        "msg-simple-1.1.jar",
+        "btf-1.2.jar",
+        "snakeyaml-1.15.jar",
     ]
 
-    jackson_deps_path = ''
+    jackson_deps_path = ""
 
     for dep in JACKSON_DEPS_WITH_VER:
         path = WEB_INF_PATH + dep
-        jackson_deps_path = jackson_deps_path + path + ','
+        jackson_deps_path = jackson_deps_path + path + ","
 
-    return jackson_deps_path
\ No newline at end of file
+    return jackson_deps_path