Test v21.06 on main and community devices

Packages in pmaports for v21.06 are built now, and device images will be built over the next day or so.

Maintainers, Please test the v21.06 release candidate on devices you maintain:

• arrow-db410c: @Minecrell

• asus-me176c: @Minecrell

• bq-paella: @lazzardo, @Minecrell

• motorola-harpia: @srxl, @Minecrell

• nokia-n900: @MartijnBraam, @drebrez

• oneplus-enchilada, oneplus-fajita @calebccff

• pine64-pinetab: @minlexx, @MartijnBraam

• pine64-pinephone: @z3ntu, @dylanvanassche, @PureTryOut, @MartijnBraam

• purism-librem5: @craftyguy

• samsung-a3lte: @TravMurav, @Minecrell

• samsung-a3ulte: @Mis012, @Minecrell

• samsung-a5lte: @minlexx, @Minecrell

• samsung-a5ulte: @Minecrell

• samsung-serranovelte: @Minecrell

• wileyfox-crackling: @TravMurav @Minecrell

• xiaomi-scorpio: @Tooniis

• xiaomi-wt88047: @Minecrell