v2.49.0

Changes

• Update contribution instructions to use consul 0.7.1 @scottillogical (#549)
• BBS Subscribe handlers to stream with chunked transfer-encoding @aminjam (#553)
• Add SANs to test certificates for Go 1.15 @acrmp (#554)

Dependencies

• Bump envoy to e98e41a8e1 @cf-diego (#556)
• Bump Golang to go1.15.6 @cf-diego (#555)