releasetools: Add a verbose parameter to common.Run().

Caller can optionally specify the verbose flag which overrides
OPTIONS.verbose. The command line won't be outputed with verbose=False.
This is useful for cases that a) those command lines are less useful
(but will spam the output otherwise); b) sensitive info is part of the
invocation.

'verbose=False' will be consumed by common.Run() only, instead of being
passed to subprocess.Popen().

Test: ota_from_target_files.py on a block based OTA.
Change-Id: I7d5b4094d756a60f84f89c6a965e7ccc68e435f8

tools/releasetools/blockimgdiff.py

@@ -41,10 +41,10 @@ def compute_patch(srcfile, tgtfile, imgdiff=False):
   cmd = ['imgdiff', '-z'] if imgdiff else ['bsdiff']
   cmd.extend([srcfile, tgtfile, patchfile])
 
-  # Not using common.Run(), which would otherwise dump all the bsdiff/imgdiff
-  # commands when OPTIONS.verbose is True - not useful for the case here, since
-  # they contain temp filenames only.
-  p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+  # Don't dump the bsdiff/imgdiff commands, which are not useful for the case
+  # here, since they contain temp filenames only.
+  p = common.Run(cmd, verbose=False, stdout=subprocess.PIPE,
+                 stderr=subprocess.STDOUT)
   output, _ = p.communicate()
 
   if p.returncode != 0: