Merge lp:~mterry/duplicity/boto-import into lp:~duplicity-team/duplicity/0.8-series

[Michael Terry]

A couple functions in the boto backend were using the boto module without importing it first.

=== modified file 'duplicity/backends/_boto_multi.py'
--- duplicity/backends/_boto_multi.py	2019-06-17 15:10:58 +0000
+++ duplicity/backends/_boto_multi.py	2019-06-24 22:27:26 +0000
@@ -113,6 +113,8 @@
         self._pool.join()
 
     def upload(self, filename, key, headers=None):
+        import boto
+
         chunk_size = globals.s3_multipart_chunk_size
 
         # Check minimum chunk size for S3

=== modified file 'duplicity/backends/_boto_single.py'
--- duplicity/backends/_boto_single.py	2019-06-17 15:10:58 +0000
+++ duplicity/backends/_boto_single.py	2019-06-24 22:27:26 +0000
@@ -182,6 +182,8 @@
         del self.storage_uri
 
     def resetConnection(self):
+        import boto
+
         if getattr(self, u'conn', False):
             self.conn.close()
         self.bucket = None