uwsgi: Increase buffer-size to 8192.
uwsgi: Increase buffer-size to 8192.

For users putting Zulip behind certain proxies (and potentially some
third-party API clients), buffer sizes can exceed the uwsgi default of
4096.  Since we aren't doing such high-throughput APIs that a small
buffer size is valuable, we should just raise this for everyone.

rht/zulip,brainwane/zulip,shubhamdhama/zulip,synicalsyntax/zulip,synicalsyntax/zulip,eeshangarg/zulip,showell/zulip,showell/zulip,punchagan/zulip,kou/zulip,synicalsyntax/zulip,kou/zulip,shubhamdhama/zulip,andersk/zulip,andersk/zulip,andersk/zulip,shubhamdhama/zulip,eeshangarg/zulip,kou/zulip,andersk/zulip,rht/zulip,shubhamdhama/zulip,showell/zulip,punchagan/zulip,eeshangarg/zulip,tommyip/zulip,timabbott/zulip,brainwane/zulip,zulip/zulip,synicalsyntax/zulip,andersk/zulip,shubhamdhama/zulip,eeshangarg/zulip,showell/zulip,rht/zulip,rishig/zulip,punchagan/zulip,timabbott/zulip,synicalsyntax/zulip,zulip/zulip,kou/zulip,rht/zulip,brainwane/zulip,hackerkid/zulip,rishig/zulip,kou/zulip,tommyip/zulip,tommyip/zulip,hackerkid/zulip,tommyip/zulip,zulip/zulip,tommyip/zulip,brainwane/zulip,rishig/zulip,shubhamdhama/zulip,rht/zulip,timabbott/zulip,hackerkid/zulip,eeshangarg/zulip,rht/zulip,hackerkid/zulip,andersk/zulip,zulip/zulip,rishig/zulip,zulip/zulip,synicalsyntax/zulip,hackerkid/zulip,andersk/zulip,rishig/zulip,punchagan/zulip,timabbott/zulip,brainwane/zulip,eeshangarg/zulip,punchagan/zulip,timabbott/zulip,punchagan/zulip,brainwane/zulip,kou/zulip,rishig/zulip,synicalsyntax/zulip,brainwane/zulip,zulip/zulip,rishig/zulip,hackerkid/zulip,timabbott/zulip,tommyip/zulip,hackerkid/zulip,zulip/zulip,showell/zulip,punchagan/zulip,kou/zulip,showell/zulip,tommyip/zulip,showell/zulip,eeshangarg/zulip,rht/zulip,timabbott/zulip,shubhamdhama/zulip