Mirror of !13 for v2.8.1

See merge request !71

SOL006 - Mirror of NFVSOL(20)000027 for v2.8.1

See merge request !75

# Conflicts:
#   example-data/nfv-nsd.xml

#9 - Fix the change in NFVIFA(18)00503 that changed the...

See merge request !65

#9 - Fix the change in NFVIFA(18)00503 that changed the layerProtocol attribute from 1 to 1..N

Issue#1 - Clarify sequencing rules for LIfeCycleManagementScript events between external and internal

See merge request !55

# Conflicts:
#   example-data/complex-vnfd.xml
#   example-data/nfv-nsd.xml
#   example-data/nfv-vnfd.xml

Issue#2 - Implement IFA011Ed251 CR NFVIFA(18)000381r1 - Enhance the virtual storage modeling in VNFD

See merge request !57

# Conflicts:
#   example-data/complex-vnfd.xml
#   example-data/nfv-nsd.xml
#   example-data/nfv-vnfd.xml

Issue#3 - Implement NFVIFA(18)000562r2_IFA011ed251_nicIoRequirements

See merge request !58

# Conflicts:
#   example-data/nfv-nsd.xml

Issue#4 - Implement NFVIFA(18)000627 - IFA011ed311 Remove element groups

See merge request !59

Merging v2.7.1 branch into master.

Fix for bug#254

See merge request !52

Bug#252

See merge request !49

# Conflicts:
#   example-data/nfv-nsd.xml
#   example-data/nfv-vnfd.xml

Bug#251

See merge request !50

# Conflicts:
#   src/yang/etsi-nfv-nsd.yang

Bug#253

See merge request !51