[behave] Pushed amd64 stabilisation back 45 days

Waiting for upstream stabilisation of parse.
[mnemosyne] Pushed amd64 stabilisation back 45 days

Waiting for upstream stabilisation of parse.
Update metadata cache for upstream's eclass changes
Merge branch 'f/keyword/amd64'

* f/keyword/amd64:
  [mnemosyne] Pushed amd64 stabilisation back 45 days
  [behave] Pushed amd64 stabilisation back 45 days