Rename apache to apache c2c

Commands launched to generate this PR:

```bash
find . -type f -name '*.pp' -print0 | xargs -0 sed -i -r "s/^class $from([^_])/class $to\1/"
find . -type f -name '*.pp' -print0 | xargs -0 sed -i -r "s/^define $from::/define $to::/"
find . -type f -name '*.pp' -print0 | xargs -0 sed -i -r 's@(inherits (::)?apache)([^_])@\1_c2c\3@'
find . -type f -name '*.pp' -print0 | xargs -0 sed -i -r 's@(\s+include\s+(::)?apache)([^_])@\1_c2c\3@'
find . -type f -name '*.pp' -print0 | xargs -0 sed -i -r "s@(class\s*\{\s*[\"\']?(::)apache)([^_])?@\1_c2c\3@"
find . -type f -name '*.pp' -print0 | xargs -0 sed -i -r 's@(\$\{?(::)?apache)::@\1_c2c::@g'
find . -type f -name '*.pp' -print0 | xargs -0 sed -i -r 's/^(#?\s+(@@)?apache)::/\1_c2c::/'
find . -type f -name '*.pp' -print0 | xargs -0 sed -i -r 's@Apache::@Apache_c2c::@'
find . -type f -name '*.erb' -print0 | xargs -0 sed -i -r 's@(scope.lookupvar\("apache)([^_])@\1_c2c\2@'
```