Bug 1151834 - Allow users to skip all interactive prompts; r=gps

Interactive prompts make automation more difficult for developers looking to stand up machines using bootstrap en masse.
Two new options have been added to allow users with such needs to bypass all prompts: one for selecing an application
(desktop/mobile) and another for assuming yes to all questions posed by package managers (apt-get/yum).

python/mozboot/bin/bootstrap.py

@@ -49,6 +49,7 @@ REPOSITORY_PATHS = [
 
 TEMPDIR = None
 
+
 def setup_proxy():
     # Some Linux environments define ALL_PROXY, which is a SOCKS proxy
     # intended for all protocols. Python doesn't currently automatically
@@ -58,6 +59,7 @@ def setup_proxy():
     if 'ALL_PROXY' in os.environ and 'http_proxy' not in os.environ:
         os.environ['http_proxy'] = os.environ['ALL_PROXY']
 
+
 def fetch_files(repo_url, repo_type):
     setup_proxy()
     repo_url = repo_url.rstrip('/')
@@ -75,6 +77,7 @@ def fetch_files(repo_url, repo_type):
 
     return files
 
+
 def ensure_environment(repo_url=None, repo_type=None):
     """Ensure we can load the Python modules necessary to perform bootstrap."""
 
@@ -118,17 +121,23 @@ def ensure_environment(repo_url=None, repo_type=None):
             from mozboot.bootstrap import Bootstrapper
             return Bootstrapper
 
+
 def main(args):
     parser = OptionParser()
     parser.add_option('-r', '--repo-url', dest='repo_url',
-        default='https://hg.mozilla.org/mozilla-central/',
-        help='Base URL of source control repository where bootstrap files can '
-             'be downloaded.')
-
+                      default='https://hg.mozilla.org/mozilla-central/',
+                      help='Base URL of source control repository where bootstrap files can '
+                      'be downloaded.')
     parser.add_option('--repo-type', dest='repo_type',
-        default='hgweb',
-        help='The type of the repository. This defines how we fetch file '
-             'content. Like --repo, you should not need to set this.')
+                      default='hgweb',
+                      help='The type of the repository. This defines how we fetch file '
+                      'content. Like --repo, you should not need to set this.')
+
+    parser.add_option('--application-choice', dest='application_choice',
+                      help='Pass in an application choice (desktop/android) instead of using the '
+                      'default interactive prompt.')
+    parser.add_option('--no-interactive', dest='no_interactive', action='store_true',
+                      help='Answer yes to any (Y/n) interactive prompts.')
 
     options, leftover = parser.parse_args(args)
 
@@ -141,8 +150,7 @@ def main(args):
             print('\n')
             print(e)
             return 1
-
-        dasboot = cls()
+        dasboot = cls(choice=options.application_choice, no_interactive=options.no_interactive)
         dasboot.bootstrap()
 
         return 0