Handle additional cases of invalid hostnames

[bdraco]

Some mDNS implementations were crashing when seeing the SRV records with a space which was translating to HASS\032Bridge\032._hap._tcp.local.

[codecov]

Codecov Report

Merging #348 (e79075a) into dev (a2a5ce1) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev     #348      +/-   ##
==========================================
+ Coverage   90.98%   91.01%   +0.02%     
==========================================
  Files          20       20              
  Lines        1931     1936       +5     
  Branches      225      225              
==========================================
+ Hits         1757     1762       +5     
  Misses        131      131              
  Partials       43       43              

Impacted Files	Coverage Δ
pyhap/accessory_driver.py	90.46% <100.00%> (+0.13%)	⬆️

[bdraco]

Once I clean this up and add the missing coverage, need to do another PR to prep for the zeroconf namespace change from zeroconf.asyncio -> zeroconf.aio

We can do a condition import for the transition

try:
    from zeroconf.aio import AsyncZeroconf
except ImportError:
    from zeroconf.asyncio import AsyncZeroconf