Paperclip: add support for Azure blob storage (#23607)

Gemfile.lock

@@ -118,6 +118,14 @@ GEM
       aws-sigv4 (~> 1.6)
     aws-sigv4 (1.6.0)
       aws-eventstream (~> 1, >= 1.0.2)
+    azure-storage-blob (2.0.3)
+      azure-storage-common (~> 2.0)
+      nokogiri (~> 1, >= 1.10.8)
+    azure-storage-common (2.0.4)
+      faraday (~> 1.0)
+      faraday_middleware (~> 1.0, >= 1.0.0.rc1)
+      net-http-persistent (~> 4.0)
+      nokogiri (~> 1, >= 1.10.8)
     bcrypt (3.1.18)
     better_errors (2.10.1)
       erubi (>= 1.0.0)
@@ -261,6 +269,8 @@ GEM
     faraday-patron (1.0.0)
     faraday-rack (1.0.0)
     faraday-retry (1.0.3)
+    faraday_middleware (1.2.0)
+      faraday (~> 1.0)
     fast_blank (1.0.1)
     fastimage (2.2.7)
     ffi (1.15.5)
@@ -410,6 +420,10 @@ GEM
     mario-redis-lock (1.2.1)
       redis (>= 3.0.5)
     matrix (0.4.2)
+    md-paperclip-azure (2.2.0)
+      addressable (~> 2.5)
+      azure-storage-blob (~> 2.0.1)
+      hashie (~> 5.0)
     memory_profiler (1.0.1)
     method_source (1.0.0)
     mime-types (3.4.1)
@@ -423,6 +437,8 @@ GEM
     multipart-post (2.3.0)
     net-http (0.3.2)
       uri
+    net-http-persistent (4.0.2)
+      connection_pool (~> 2.2)
     net-imap (0.3.6)
       date
       net-protocol
@@ -822,6 +838,7 @@ DEPENDENCIES
   link_header (~> 0.0)
   lograge (~> 0.12)
   mario-redis-lock (~> 1.2)
+  md-paperclip-azure (~> 2.2)
   memory_profiler
   mime-types (~> 3.4.1)
   net-http (~> 0.3.2)