[sosreport,reporting] replace HTML reports by Report subclass

[pmoravec]

Current HTML report generation is slow and its implementation is full
of scattered html code. We shall utilize Report class instead.

Additionally, add JSON report format for easy automated parsing.

Resolves: #1713

Signed-off-by: Pavel Moravec pmoravec@redhat.com

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[pmoravec]

Failed Travis build is some infra issue - python3.4 failed due to network timeout. Not relevant to PR.

[pmoravec]

The PR still has an issue:

touch /etc/network_přílišžluťoučkýkůňpělódy
./sosreport -o networking,networkmanager --batch --build
..
Traceback (most recent call last):
  File "./sosreport", line 19, in <module>
    main(sys.argv[1:])
  File "/root/sos-master/sos/sosreport.py", line 1373, in main
    sos.execute()
  File "/root/sos-master/sos/sosreport.py", line 1350, in execute
    self.generate_reports()
  File "/root/sos-master/sos/sosreport.py", line 1151, in generate_reports
    output = class_(report).unicode()
  File "/root/sos-master/sos/reporting.py", line 250, in unicode
    return json.dumps(self.report_data, indent=4, ensure_ascii=False)
  File "/usr/lib64/python2.7/json/__init__.py", line 250, in dumps
    sort_keys=sort_keys, **kw).encode(obj)
  File "/usr/lib64/python2.7/json/encoder.py", line 210, in encode
    return ''.join(chunks)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc5 in position 17: ordinal not in range(128)

The reason is tricky: some of networkmanager report's leaf objects are unicode strings, which beats with the copied_files containing /etc/network_přílišžluťoučkýkůňpělódy in networking. So we must populate CopiedFile and Command etc. in generate_reports the same way (unicode XOR non-unicode every time).

[pmoravec]

... and the issue identified and fixed (Reporting class must store data decoded from UTF to prevent mis-match of some stored data as str and some as unicode)

[pmoravec]

Closed this in 1e60189 .