fixes formatting issues with perl commands

Author: bweigel

test.js

@@ -61,6 +61,7 @@ const teardown = () => {
     'package-lock.json',
     'slimPatterns.yml',
     'serverless.yml.bak',
+    'module1/foobar',
     getUserCachePath(),
     ...glob.sync('serverless-python-requirements-*.tgz')
   ].map(path => removeSync(path));
@@ -210,7 +211,7 @@ test("py3.6 doesn't package bottle with noDeploy option", t => {
   npm(['i', path]);
   perl([
     '-p',
-    "-i'.bak'",
+    '-i.bak',
     '-e',
     's/(pythonRequirements:$)/\\1\\n    noDeploy: [bottle]/',
     'serverless.yml'
@@ -437,7 +438,7 @@ test("py2.7 doesn't package bottle with noDeploy option", t => {
   npm(['i', path]);
   perl([
     '-p',
-    "-i'.bak'",
+    '-i.bak',
     '-e',
     's/(pythonRequirements:$)/\\1\\n    noDeploy: [bottle]/',
     'serverless.yml'
@@ -676,7 +677,7 @@ test("pipenv py3.6 doesn't package bottle with noDeploy option", t => {
   npm(['i', path]);
   perl([
     '-p',
-    "-i'.bak'",
+    '-i.bak',
     '-e',
     's/(pythonRequirements:$)/\\1\\n    noDeploy: [bottle]/',
     'serverless.yml'
@@ -692,8 +693,8 @@ test('py3.6 can package flask with zip option and no explicit include', t => {
   process.chdir('tests/base');
   const path = npm(['pack', '../..']);
   npm(['i', path]);
-  perl(['-p', "-i'.bak'", '-e', 's/include://', 'serverless.yml']);
-  perl(['-p', "-i'.bak'", '-e', 's/^.*handler.py.*$//', 'serverless.yml']);
+  perl(['-p', '-i.bak', '-e', 's/include://', 'serverless.yml']);
+  perl(['-p', '-i.bak', '-e', 's/^.*handler.py.*$//', 'serverless.yml']);
   sls(['--zip=true', 'package']);
   const zipfiles = listZipFiles('.serverless/sls-py-req-test.zip');
   t.true(
@@ -733,7 +734,7 @@ test(
     npm(['i', path]);
     perl([
       '-p',
-      "-i'.bak'",
+      '-i.bak',
       '-e',
       's/(handler.py.*$)/$1\n    - foobar/',
       'serverless.yml'
@@ -821,7 +822,7 @@ test("py3.6 doesn't package bottle with zip option", t => {
   npm(['i', path]);
   perl([
     '-p',
-    "-i'.bak'",
+    '-i.bak',
     '-e',
     's/(pythonRequirements:$)/\\1\\n    noDeploy: [bottle]/',
     'serverless.yml'