DB/Creature: Lyria Skystrider

By dr-j, closes #12587
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into ghbb

Conflicts:
	src/server/scripts/Northrend/IcecrownCitadel/boss_rotface.cpp
Merge branch 'master' of https://github.com/TrueWoW/TrinityCore into ghbb

Conflicts:
	.travis.yml
	src/server/scripts/Custom/AzjolNerub/TW_boss_hadronox.cpp
	src/server/scripts/Custom/Ulduar/TW_boss_mimiron.cpp
	src/server/scripts/Custom/Ulduar/TW_boss_thorim.cpp
	src/server/scripts/Custom/WorldEvents/TW_boss_apothecary_trio.cpp
	src/server/scripts/Custom/cs_custom.cpp
	src/server/scripts/Custom/custom_scripts.cpp
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