twrp-7.1: add repo for bash

Change-Id: Idff35b1f0ca9c557bae397df2ef887fac195ac09

twrp-extras.xml

@@ -18,7 +18,8 @@
 <!-- Include external zip repo for zip support -->
     <project path="external/zip" name="android_external_zip" remote="TeamWin" revision="android-7.1" />
 
-<!-- Include external LineageOS repos for nano -->
+<!-- Include external LineageOS repos for bash & nano -->
+    <project name="android_external_bash" path="external/bash" remote="LineageOS" revision="cm-14.1" />
     <project name="android_external_nano" path="external/nano" remote="LineageOS" revision="cm-14.1" />
     <project name="android_external_libncurses" path="external/libncurses" remote="LineageOS" revision="cm-14.1" />
 </manifest>