build: Support MacOS sed for obtaining module list.

[davecgh]

This modifies the code in run_tests.sh which obtains the stripped list of modules to test based on the output of the go list command to work with MacOS as well. It seems that sed on MacOS does not like the "or" regexp syntax, so this modifies it to perform each branch separately.

[dnldd]

gometalinter is generating a lot of warnings for me with this. Each module is being tested separately as intended however.

...
+ for module in '$MODPATHS'
+ echo '==> txscript'
==> txscript
+ cd txscript
+ env GORACE=halt_on_error=1 CC=gcc go test -short -race -tags rpctest ./...
ok  	github.com/decred/dcrd/txscript	(cached)
+ for module in '$MODPATHS'
+ echo '==> wire'
==> wire
+ cd wire
+ env GORACE=halt_on_error=1 CC=gcc go test -short -race -tags rpctest ./...
ok  	github.com/decred/dcrd/wire	(cached)
+ [[ 1.11 != 1.10 ]]
+ go mod vendor
+ unset GO111MODULE
+ gometalinter --vendor --disable-all --deadline=10m --enable=gofmt --enable=gosimple --enable=unconvert --enable=ineffassign ./...
vendor/github.com/dchest/siphash/siphash.go:12:8:warning: could not import hash (cannot find package "hash" in any of: (gosimple)
internal/version/version.go:11:2:warning: could not import bytes (cannot find package "bytes" in any of: (unconvert)
internal/version/version.go:12:2:warning: could not import fmt (cannot find package "fmt" in any of: (unconvert)
internal/version/version.go:13:2:warning: could not import strings (cannot find package "strings" in any of: (unconvert)
vendor/github.com/decred/dcrd/blockchain/stake/internal/dbnamespace/dbnamespace.go:7:2:warning: could not import encoding/binary (cannot find package "encoding/binary" in any of: (unconvert)
vendor/github.com/dchest/siphash/siphash.go:12:8:warning: could not import hash (cannot find package "hash" in any of: (unconvert)
blockchain/internal/dbnamespace/dbnamespace.go:7:2:warning: could not import encoding/binary (cannot find package "encoding/binary" in any of: (unconvert)
vendor/github.com/dchest/blake256/blake256.go:12:8:warning: could not import hash (cannot find package "hash" in any of: (unconvert)
internal/limits/limits_unix.go:11:2:warning: could not import fmt (cannot find package "fmt" in any of: (unconvert)
internal/limits/limits_unix.go:12:2:warning: could not import syscall (cannot find package "syscall" in any of: (unconvert)
vendor/github.com/decred/dcrd/chaincfg/chainhash/hash.go:9:2:warning: could not import encoding/hex (cannot find package "encoding/hex" in any of: (unconvert)
vendor/github.com/decred/dcrd/chaincfg/chainhash/hash.go:10:2:warning: could not import fmt (cannot find package "fmt" in any of: (unconvert)
dcrjson/chainsvrcmds.go:12:2:warning: could not import encoding/json (cannot find package "encoding/json" in any of: (unconvert)
dcrjson/chainsvrcmds.go:13:2:warning: could not import fmt (cannot find package "fmt" in any of: (unconvert)
dcrjson/cmdinfo.go:10:2:warning: could not import reflect (cannot find package "reflect" in any of: (unconvert)
dcrjson/cmdinfo.go:11:2:warning: could not import strings (cannot find package "strings" in any of: (unconvert)
dcrjson/cmdparse.go:12:2:warning: could not import strconv (cannot find package "strconv" in any of: (unconvert)
dcrjson/help.go:9:2:warning: could not import bytes (cannot find package "bytes" in any of: (unconvert)
dcrjson/help.go:13:2:warning: could not import text/tabwriter (cannot find package "text/tabwriter" in any of: (unconvert)
dcrjson/parse.go:8:2:warning: could not import encoding/hex (cannot find package "encoding/hex" in any of: (unconvert)
dcrjson/register.go:12:2:warning: could not import sort (cannot find package "sort" in any of: (unconvert)
dcrjson/register.go:15:2:warning: could not import sync (cannot find package "sync" in any of: (unconvert)
vendor/github.com/decred/dcrd/certgen/certgen.go:9:2:warning: could not import bytes (cannot find package "bytes" in any of: (unconvert)
vendor/github.com/decred/dcrd/certgen/certgen.go:10:2:warning: could not import crypto/ecdsa (cannot find package "crypto/ecdsa" in any of: (unconvert)
vendor/github.com/decred/dcrd/certgen/certgen.go:11:2:warning: could not import crypto/elliptic (cannot find package "crypto/elliptic" in any of: (unconvert)
vendor/github.com/decred/dcrd/certgen/certgen.go:12:2:warning: could not import crypto/rand (cannot find package "crypto/rand" in any of: (unconvert)
vendor/github.com/decred/dcrd/certgen/certgen.go:13:4:warning: could not import crypto/sha512 (cannot find package "crypto/sha512" in any of: (unconvert)
vendor/github.com/decred/dcrd/certgen/certgen.go:14:2:warning: could not import crypto/x509 (cannot find package "crypto/x509" in any of: (unconvert)
...```

[davecgh]

Looks like an old version of gometalinter.

[dnldd]

sorted out and working as expected.

[jrick]

Can't test on macOS but looks reasonable