Backporting patch for #5211 to 2.2.7

[rcoss]

It seems as if patch for #5211 has not been ported back to 2.2.7
SERVER: cups 1.1.23

CLIENT: Ubuntu 18.04.2 LTS / cups 2.2.7-1ubuntu2.5 / lpr
CLIENT: /etc/cups/client.conf: ServerName printserver.xx.yy.zz/version=1.1
CLIENT: cupsd NOT running, cups-browsed NOT running, just using lpr
CLIENT:
rcoss@my_host:~$ lpr /etc/hosts
lpr: Bad Request

Wireshark capture follows:

[rcoss]

IPP Request #1

version: 1.1
operation-id: CUPS-Get-Default (0x4001)
request-id: 1
operation-attributes-tag
attributes-charset (charset): 'utf-8'
name: attributes-charset
charset value: 'utf-8'
...
...
requesting-user-name (nameWithoutLanguage): 'rcoss'
name: requesting-user-name
nameWithoutLanguage value: 'rcoss'
end-of-attributes-tag

IPP Response #1

version: 1.1
status-code: Successful (successful-ok-ignored-or-substituted-attributes)
request-id: 1
operation-attributes-tag
attributes-charset (charset): 'utf-8'
name: attributes-charset
charset value: 'utf-8'
attributes-natural-language (naturalLanguage): 'en-us'
name: attributes-natural-language
naturalLanguage value: 'en-us'
printer-attributes-tag
printer-uri-supported (uri): 'ipp:https://printserver:631/printers/pylj4250'
name: printer-uri-supported
uri value: 'ipp:https://printserver:631/printers/pylj4250'
...
...
printer-make-and-model (textWithoutLanguage): 'HP LaserJet 4250 Postscript (dm.uba.ar)'
name: printer-make-and-model
textWithoutLanguage value: 'HP LaserJet 4250 Postscript (dm.uba.ar)'
printer-type (enum): 37076
name: printer-type
enum value: 37076
end-of-attributes-tag

============================
When client sends IPP request for Create-Job, switches to use version 2.0!!,
but server only supports IPP version 1.1

============================

IPP Request #5

version: 2.0
operation-id: Create-Job (0x0005)
request-id: 5
operation-attributes-tag
attributes-charset (charset): 'utf-8'
name: attributes-charset
charset value: 'utf-8'
attributes-natural-language (naturalLanguage): 'en-us'
name: attributes-natural-language
naturalLanguage value: 'en-us'
printer-uri (uri): 'ipp:https://printserver:631/printers/pylj4250'
name: printer-uri
uri value: 'ipp:https://printserver:631/printers/pylj4250'
requesting-user-name (nameWithoutLanguage): 'rcoss'
name: requesting-user-name
nameWithoutLanguage value: 'rcoss'
job-name (nameWithoutLanguage): '(stdin)'
name: job-name
nameWithoutLanguage value: '(stdin)'
job-attributes-tag
job-sheets (1setOf nameWithoutLanguage): 'none','none'
name: job-sheets
nameWithoutLanguage value: 'none'
nameWithoutLanguage value: 'none'
end-of-attributes-tag

HTTP Response #5

HTTP/1.1 400 Bad Request\r\n
Date: Mon, 27 May 2019 15:32:07 GMT\r\nç
Server: CUPS/1.1\r\n
Content-Language: en\r\n
Upgrade: TLS/1.0,HTTP/1.1\r\n
Connection: close\r\n
Content-Type: text/html\r\n
Content-Length: 156\r\n
\r\n
Line-based text data: text/html (1 lines)

<TITLE>400 Bad Request</TITLE>

Bad Request

Your browser sent a request that this server could not understand.\n

[michaelrsweet]

[branch-2.2 9b48d16] Back-port more compatibility fixes from CUPS 2.3.x - IPP/1.1 compatibility with old versions of CUPS... (Issue #5587)