Add SUT and Emissary strategies

SUT and Emissary strategies are executed dynamically based on the new
properties in the Job schema definition.
Created new sUt.js and child classes for browser apps and APIs.
Moved logic in step file app_scan_steps into strategies to be shared
by various step files such as app and API specific.
A host mounted directory is now required to put ephemeral files
such as scripts, and in the future API definitions.
Remove zaproxy dependency due to functionality now being in
zAp Emissary.
Change test plan (feature file) wording.
Fix browser.js authenticated function to return false when not
authenticated, also provide new function for Link strategy to
check if authenticated.

Author: binarymist

Dockerfile

@@ -14,7 +14,7 @@ RUN echo user is: ${USER}, LOCAL_USER_ID is: ${LOCAL_USER_ID}, group is: ${GROUP
 #RUN apk add wget
 
 # Remove git once zaproxy from package.json is in NPM
-RUN apk add --no-cache git
+#RUN apk add --no-cache git
 # Following taken from: https://github.com/mhart/alpine-node/issues/48#issuecomment-430902787
 RUN apk add --no-cache shadow && \
     if [ -z "`getent group $LOCAL_GROUP_ID`" ]; then \

config/config.js

@@ -151,6 +151,13 @@ const schema = {
         default: ['html', 'json', 'md']
       }
     },
+    upload: {
+      dir: {
+        doc: 'The location in the Emissary container where the app-scanner can put files for the Emissary to consume.',
+        format: String,
+        default: '/mnt/purpleteam-app-scanner/'
+      }
+    },
     spider: {
       maxDepth: {
         doc: 'Sets the maximum depth the spider can crawl, 0 for unlimited depth.',
@@ -236,6 +243,13 @@ const schema = {
       default: '/var/log/purpleteam/outcomes/'
     }
   },
+  upload: {
+    dir: {
+      doc: 'The location in the app-scanner container where the app-scanner can put files for the Emissary to consume.',
+      format: String,
+      default: '/mnt/purpleteam-app-scanner/'
+    }
+  },
   cloud: {
     function: {
       region: {